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Uses formula to find the amount of wrapping paper you need to wrap a gift in the cylindrical box shown. You need to cover the top, bottom, and all the way around the box. Use 3.14 for pi.

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sqdancefan

Answer:

  960.84 in^2

Step-by-step explanation:

The formula for the surface area of a cylinder is ...

  SA = 2πr^2 +2πrh = 2πr(r +h)

For the given box, the surface area is ...

  SA = 2π(9 in)(9 in + 8 in) = 306π in^2

  SA = 960.84 in^2

960.84 square inches of wrapping paper are needed.

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