A certain cube floating in a bucket of water has between 80 and 90 percent of its volume below the surface of the water. If between 6 and 13 cubic centimeters of the cube's volume is above the surface of the water, then the length of a side of the cube is approximately
Choose the correct choice from the following:
A) 4 B) 5 C) 7 D) 8 E) 9
If sides are 7, vol=7^3=343   80%= 274.4, 90%=308.7   so vol above water, between 68.6 and 34.3 --&gt;too big   If side are 4, vol = 64   80%=51.2, 90%=57.6   vol above water between 12.8 and 6.4   So 4 should be the answer.   Check option C,   If sides are 5, vol = 125   80%= 100, .90%=112.5   vol above water between 12.5-25   (Sides are 4 cubic centimeters)   4
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A certain cube floating in a bucket of water has between 80 and 90 percent of its volume below the surface of the water. If between 6 and 13 cubic centimeters of the cube's volume is above the surface of the water, then the length of a side of the cube is approximately