Square Pyramid Frustrum Surface Area

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Question: A frustum of a regular square pyramid has bases with sides of length 6 and 10. The height of the frustum is 12. Find: Surface area of the frustum
A frustum of a regular square pyramid has bases with sides of length 6 and 10. The height of the frustum is 12. Find: Surface area of the frustum

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Answered By:

Madonna Y.
MIT grad, bringing fun and exploration to math with origami!

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I'm confused about u factored out the square root of 4+144 and I still don't get why or how u came up equals to square root of 4 multiplied by 1+36?

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