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August 28, 2015

Homework Help: Math

Posted by My Name Is Bob on Sunday, May 13, 2012 at 2:15pm.

A hi-tech bowling ball is constructed from concentric spheres, kind of like a perfectly round M&M peanut. The inner sphere, of material X, has a radius of 1 inch. The middle spherical shell of material Y has a thickness of 2 inches. The outer shell of material Z has a thickness of 1 inch. A ball of the same size made of 100% X,Y, or Z weighs 16, 14, and 12 lbs respectively. What is the weight of this hi-tech ball to the nearest tenth?

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