A certain cube floating in a bucket of water has between 80 and 85 percent of its volume below the surface of the water. If between 8 and 15 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  Select.
A) 3  B) 4  C) 7  D) 8  E) 9
If sides are 7, vol=7^3=343   80%= 274.4, 85%=291.55   so vol above water, between 68.6 and 51.45 --&gt;too big   If side are 4, vol = 64   80%=51.2, 85%=54.4   vol above water between 12.8 and 9.6   So 4 should be the answer.   Check option C,   If sides are 5, vol = 125   80%= 100, .85%=106.25   vol above water between 18.75-25   (Sides are 4 cubic centimeters)   4
<result>B</result>
A certain cube floating in a bucket of water has between 80 and 85 percent of its volume below the surface of the water. If between 8 and 15 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