53. Estimating Volume You can estimate the volume of a sphere by measuring its circumference with a tape measure, dividing by 27 to get the radius, then using the radius in the volume formula. Find how sensitive your volume estimate is to a 1/8 in. error in the circumference measurement by filling in the table below for spheres of the given sizes. Use differentials when filling in the last column. Sphere Type True Radius Tape Error Radius Error Volume Error Orange 2 in. 1/8 in. Melon 4 in. 1/8 in. Beach Ball 7 in. 1/8 in.

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