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Q: Why do you use pi to find volumes?

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Working out areas and volumes of circles and spheres respectively

To find the diameter of a circle, you use pi to find the radius, because the middle of a circle is pi.

the number is that you use for pi is 3.14 the number is that you use for pi is 3.14

people use pi to find the circumference of a circle.

There are very many calculations which use pi. Many of them are in geometry: areas of circles and ellipses, volumes of solids of revolution. But there are also many applications in statistics.

the way to use pi is to find the circuference of a circle

Volumes are cubic measures. Use a 3.

Pi is the number you have to use to solve many circle equations. If you want to find the area of a circle, use radius squared times pi. For the circumference, use diameter times pi.

Well it depends. You could use pi to find the area of a cylinder or use it to find the area of a circle lets say for a new window.

use pi (3.14)

You need Pi to find the radius or circumference of a circle and there are many more uses!

circumference = pi * 2radius (diameter) so to find radius you use circumference/(2 x pi) this will find radius ----

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