Real math help.
How Do You Find the Volume of a Cylinder?
Note:
The volume of a cylinder is the amount of space that will fit inside it. You can use the formula for the volume of a cylinder to find that amount! In this tutorial, see how to use that formula and the radius and height of the cylinder to find the volume. Check it out!
Background Tutorials
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Real Number Definitions
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What's an Irrational Number?
Is an irrational number just a way to describe a number that's lost its mind? Not really. :) An irrational number is simply a number that cannot be written as a fraction. Check out the definition, learn an important property of these special numbers, and take a look at some examples of irrational numbers.
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Evaluating Expressions
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How Do You Evaluate an Algebraic Expression?
Plugging variables into an expression is essential for solving many algebra problems. See how to plug in variable values by watching this tutorial.
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What is a Variable?
You can't do algebra without working with variables, but variables can be confusing. If you've ever wondered what variables are, then this tutorial is for you!
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What's the Order of Operations?
Check out this tutorial where you'll see exactly what order you need to follow when you simplify expressions. You'll also see what happens when you don't follow these rules, and you'll find out why order of operations is so important!
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Areas of Circles and Sectors
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What is the Formula for the Area of a Circle?
Did you know that you can figure out the formula for the area of a circle by first turning the circle into a parallelogram? It seems a little weird, but it really works! Watch this tutorial to see how it's done!
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Further Exploration
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Finding Volumes
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How Do You Find the Height of a Cylinder if You Know the Volume?
Want to find the height of a cylinder? Already know the volume of the cylinder and radius of the base? Then, you can use the formula for the volume of a cylinder to find the height! Check out this tutorial to see how!
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