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If you need to find how big something 2-D is you need to know how to find the area of various shapes. If carpeting you need area. You don't think about it but area is very important. Math isn't useless and is very important int he real world.

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Q: Why would you need to find area?
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How do you find the area of an icosahedron?

You would need to divide it into triangles, find the area of each triangle and sum these areas together.


What measurements do you need to find the area and perimeter of a rectangle how would you use these measurements to find the area and perimeter of a square?

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What measurements do you need to find the area and perimeter of a rectangle how would you use these measurements to find the area and perimeter of a rectangle?

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