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Formula for surface area and volume of cylinders

Geometry: Master Shapes, Proofs & Spatial Reasoning

Measuring Systems

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Conversions between metric and imperial systems

Metric to Imperial Conversions

Imperial to Metric Conversions

Conversions Between Metric and Imperial Systems Speed KM to MI

Conversions Between Metric and Imperial Systems Speed  MI to M

Metric-Imperial Length Conversion Inch To Cm

Metric-Imperial Length Conversion MM/CM/M/KM To FT

Metric-Imperial Length Conversion MM/CM/M/KM To MI

Metric systems in measuring systems

Add and Subtract Mixed Units

Metric Length Conversion

Metric systems

Add or Subtract Different Metric Units Convert to CM

Add or Subtract Different Metric Units Convert to M

Add or Subtract Different Metric Units Convert to MM

Imperial systems in measuring systems

Imperial systems

Imperial Length Conversion

Conversions involves squares and cubes

Imperial to Metric Conversions — Squares and Cubes

Imperial Conversion — Squares and Cubes

Metric to Imperial Conversion — Squares and Cubes

Conversions involving squares and cubic

Metric Area Conversion FT to CM

Metric Area Conversion Foot to Inch

Metric Area Conversion M/CM to Inch

Surface Area and Volume

Surface area and volume of prisms

Surface area and volume of pyramids

Surface area and volume of cylinders

Surface area and volume of cones

Surface area and volume of spheres

Points, Lines, Segments, Midpoints and Chords

Distance formula: \(d = \sqrt{(x_2-x_1)^2+(y_2-y_1)^2}\)

Distance formula: <katex>d = \sqrt{(x_2-x_1)^2+(y_2-y_1)^2}</katex>

Distance formula

Midpoint formula: \(M = ( \frac{x_1+x_2}2  ,\frac{y_1+y_2}2)\)

Midpoint formula

Midpoint formula: <katex>M = ( \frac{x_1+x_2}2  ,\frac{y_1+y_2}2)</katex>

Midpoint formula: <katex>M = ( \frac{x_1+x_2}2 ,\frac{y_1+y_2}2)</katex>

Slope-Y-intercept form: y = mx + b

Slope intercept form: y = mx + b

Graph using a single point and slope

Solve linear equations

Introduction to linear equations

Circles, plane and coordinate

Angles in a circle

Chord properties in circle geometry

Tangent properties in circle geometry

Circles and circumference 

Circle properties

Arcs of a circle

Areas and sectors of circles

Central angles and proofs

Inscribed angles and proofs

Central and inscribed angles in circles

Circle chord, tangent, and inscribed angles proofs

Triangles and special triangles

Solving expressions using 45-45-90 special right triangles

Solving expressions using 30-60-90 special right triangles

Pythagorean theorem

Pythagorean Theorem

Classifying triangles

Congruence and congruent triangles

Triangles congruent by SSS proofs

Triangles congruent by SAS and HL proofs

Triangles congruent by ASA and AAS proofs

Isosceles and equilateral triangles

Angles and trigonometry

Use sine ratio to calculate angels and side (Sin = \(\frac{o}{h})\)

Use cosine ratio to calculate angles and side (Cos =  \(  \frac{a}{h}\)  )

Combination of SohCahToa questions

Word problems relating ladder in trigonometry

Word problems relating guy wire in trigonometry

Use tangent ratio to calculate angles and side (Tan =  \(  \frac{o}{a}\)  )

Transformations

Line symmetry

Rotation symmetry and transformations

Similarity

Scale diagrams

Similar triangles

2D figures and 3D figures

Surface area of three-dimensional (3D) objects

Nets of three-dimensional objects

Tessellations using rotations

Probability

Fundamental counting principle

Fundamental Counting Principle Involving Restrictions

Permutations

Solve problems involving both permutations and combinations

Problems involving both permutations and combinations

Probability of independent events 

Probability with Venn diagrams

Vectors

Word problems on vectors

Introduction to vectors

Magnitude of a vector

Direction angle of a vector

Equivalent vectors

Adding and subtracting vectors in component form

Set Theory

Set notation

Understanding How to Use Set Notation

Set builder notation

Intersection and union of 2 sets

Intersection and Union of 2 Sets

Intersection and union of 3 sets

Intersection and Union of 3 Sets

Interval notations

Sine Rule and Cosine Rule

Law of sines

Ambiguous case: SSA triangles

Law of cosines

Applications of the sine law and cosine law

Bearings

Introduction to bearings

Bearings and direction word problems

Bearings and Direction Word Problems

Angle of elevation and depression

Logic

Inductive reasoning

Statements

Negations

Conjunctions and disjunctions

Truth tables

Conditionals

Inverses, converses, and contrapositives

Biconditionals

Deductive reasoning

Algebraic proofs

Reasoning

Consecutive integers

Number sequences

Finding the missing digit

Angles, lines and transversals

Parallel line equations

Parallel line equation

Parallel and perpendicular lines

Combination of both parallel and perpendicular line equations

Pairs of lines and angles

Parallel lines and transversals

Parallel line proofs

Perpendicular line proofs

<p>Get better math marks with our complete Geometry help, whether it&apos;s <a href="http://www.corestandards.org/Math/Content/HSG/introduction/">Geometry common core standards</a>, Geometry <a href="http://www.fldoe.org/accountability/assessments/k-12-student-assessment/end-of-course-eoc-assessments/index.stml">EOC</a>, or <a href="https://www.engageny.org/resource/geometry-module-1">EngageNY Geometry</a> (Regents Examination). We've got you covered!</p>
<p>Keeping with your class or textbook, our thorough help for Geometry includes topics such as Similar triangles, Geometry proofs, right triangle trigonometry, 3D shapes, Triangle geometry, Midpoint, Surface area of circles, Translations, and more. Learn the concepts with our video tutorials that show you step-by-step solutions to even the hardest geometry problems. Then, strengthen your understanding with tons of geometry practice.</p> 
<p>All our lessons are taught by experienced Geometry teachers. Let&apos;s finish your homework in no time, and ACE that final.</p>


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math

<h2>What is Geometry?</h2>
<p>Understanding geometry can be difficult. With so many sub-topics under the umbrella of Geometry it can be difficult to grasp what exactly is Geometry, <a href="https://www.studypug.com/blog/">why and when could ever be useful?</a> Generally speaking, Geometry is study of shapes &ndash; how they can be transformed, scaled, measuring/calculating the angles found within them, as well as other characteristics such as area, volume, and so forth. The study of Geometry also involves the study of lines, the building blocks of shapes, and their properties. Here at StudyPug, Geometry will also introduce you to the realm of statistics where we look at probability, and how this is to shapes (i.e. Venn diagrams).</p>

<h2>Who is known as the father of geometry?</h2>
<p>The honour and prestige of this title was bestowed to the one and only Euclid of Alexandria. He was an incredible Mathematician who studied at Plato&apos;s Academy in Greece and the first to study Geometry.  He went on to publish a variety of textbooks used by mathematicians to this day. He is most known for his work on a publication titled "The Elements" that feature ground-breaking content on algebra, number theories, and of course, geometry. It is said that this masterpiece was what earned him the title of "Father of Geometry" (<a href="https://en.wikipedia.org/wiki/Euclid">https://en.wikipedia.org/wiki/Euclid</a>).</p>

<h2>Is geometry hard?</h2>
<p>Studying Geometry can have its challenges and learning curves, but that&apos;s why we&apos;re here! Here at StudyPug, we offer help for all - those who fall under the category of Geometry for dummies or those who are looking for more practice and/or advanced questions. At StudyPug we strive to make learning geometry easy, accessible, and engaging. With over 1000&apos;s of lessons, Step-by-step examples, and 24/7 help, we are prepared to help students with endless opportunities for easy practice, be it for Geometry exam preparation or to simply to reinforce learning. Here at StudyPug we cover a wide variety of questions you may encounter and we also use a variety of Geometry textbooks (e.g. Prentice Hall Geometry; Glencoe Geometry; McDougal Littell Geometry; Big Ideas Math Geometry) to cater comprehensively to the content you may be learning. Rest assured, we&apos;re well equipped to help with the fundamental concepts and basic problems that will allow you to progress confidently to more complex, challenging questions at your own pace.</p>

<h2>What is Euclidean geometry?</h2>
<p>Euclidean geometry is the branch of geometry that is focused on the study of 2-dimension solid geometry and planes. Some examples include basic facts such as the interior angles of triangles should equal to 180 degrees and that the shortest distance between point A and B is a straight line. Euclidean geometry was built on the basis of Euclid mathematical theories and postulates, most notably composed and synthesized in his publication "The Elements". In a broader sense, Euclidean geometry is also referred to the importance of utilizing cognitive abilities in Math. This encompasses the learner to defer techniques of memorization and formulas, and to rely on a strong, holistic understanding of the subject that allows application of skills and techniques to solve Math problems. While you may have begun studying Euclidean geometry early on in school, you will soon begin exploring concepts of non-euclidean geometry (e.g. properties of 3D shapes, such as a sphere).</p>

<h2>How to pass geometry?</h2>
<p>Whether you&apos;re preparing for a Geometry test, exam, or simply require Geometry help, StudyPug is here to help you succeed and pass your assessments through our Geometry tutoring and Geometry lessons.  Our Geometry tutors will cover content, study tips, strategies, and practice questions that will provide you with as much help with Geometry as you need. We recommend starting with the difficult sub-topics/chapters you are struggling with, follow our Geometry tutorials as we take you step-by-step through the process of understanding a concept or problem you may have. Some concepts or problems are trickier than others so you may need to revisit theses areas more than once, which shouldn&apos;t be a problem given your unlimited, 24/7 access. Once you are feeling confident, we encourage you to practice, practice, practice! This enables you to be prepared for different styles of questions as well as different levels of difficulty. These questions will supplement your learning and truly test your understanding.</p>

<h2>What grade is geometry?</h2>
<p>Students begin learning Geometry in 10th Grade. Students should have a strong understanding of <a href="[[region_textbook.html|{"textbook_key":"algebra-1"}]]">Algebra 1</a> (completed in 9th Grade) before beginning to tackle topics covered in Geometry. For a refresher, please see our <a href="[[region_textbook.html|{"textbook_key":"algebra-1"}]]">Algebra 1 page</a>.  Following the completion of Geometry, students may proceed to beginning <a href="[[region_textbook.html|{"textbook_key":"algebra-2"}]]">Algebra 2</a>. Ahead of the game? Wonder what comes after Geometry? Visit our <a href="[[region_textbook.html|{"textbook_key":"algebra-2"}]]">Algebra 2 page</a> for more learning.</p>

https://dmn92m25mtw4z.cloudfront.net/img/textbook/textbook-geometry.png

Ex. 1:

<p>Hi. Welcome to this Question Here. Okay, the question asks for the surface area and the volume of a cylinder, which is good because we do have a nice equation for these questions here. So to start off, we're going the diameter equals to 42 feet and the height is 110 feet. The units are being consistent, which is good. But we don't really use diameter that much when it comes to the equation, so we're going to change them to radius. Okay? So it's a quick calculation. Just take the 42 and divide it by 2 and you get yourself the radius to be to equal to, I'm just going to put it on the side here, to be 21 feet, 21 feet right there. So let's start off by calculating the surface area first, okay?<br />
So surface area. Now, the equation says its 2 pi r-squared, and plus the 2 pi r with the h. Now, some people might be wondering, so why is it the equation looks like this is? Is there any reason for this to occur? It's straightforward. If you actually unwrap the cylinder, you will see that it's a circle on the top with a rectangular shape in the middle and followed by another circle. Okay? So if you unwrap it open, that's what you see. We&apos;ve got two circles and the one rectangles. That 2 pi r-squared -- the pi r-squared is the area of the circle, and since there are two of them, that's why we&apos;ve got the two here. The 2 pi r over here is the circumference of the circle, because when you unwrapped it, the length of the rectangle over here is the circumference. That's where the 2 pi r comes in. And the height is just this guy right here. Okay?<br />
So that's where you get the equation from. So the rest of the work to find the surface area, just plug it in. So here we go really quickly, we&apos;ve got 2 pi times the radius. That's why we had to find the radius first. We're going to square that, plus the 2 pi times the radius, 21 times the height is 110. And just use your calculator. Punch it in. You should get the answer. It turns out to be 17285 and we&apos;ve got feet, and it's a square. Okay?<br />
Quickly, let's do the next part, which is the volume. The volume of the cylinder is also called with the equation itself. It's just the area of the base times the height. So we're going to put down the base area, and we're going to say times the height, just like that. Now, if you look at the diagram of the cylinder, the base is the circular part, which is the bottom, right here. Okay? Or on the top, this piece right here. Identical piece. So it's a circle. Therefore the area of the circle is going to be a pi r-squared, and the height is given on the side, 110. So let's quickly fill in the information that we have. Here's my pi. The radius is 21 squared, and times the h, 110, and your answer now would be 152398.7 and we&apos;ve got ourselves the feet cubed. Remember that volume's are in cubes, the surface area are in squares. Okay? And that's your answer, right here. Thanks for watching.</p>


A cylinder is like stacking up a pile of circle plates. With information such as, height, <a href='[[glossary.html|{"keyword":"Radius of a Circle or Sphere"}]]'>radius</a>, and circumference, it is easy to calculate the surface area and volume of cylinders.Let's look at how to calculate the surface area and volume of composite solids too.

Surface area of cylinders

Volume of cylinders