The volume of a particular cube is 8 cubic inches. Find the surface area of the cube, in square inches.
A
4
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B
12
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C
24
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D
32
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Solution
The correct option is C24 Given, volume of a particular cube is V=8 cubic inches We know formula for volume of a cone is: V=s3, where s is the side of the cube.
⇒8=s3 ⇒s=3√8=2 inches.
We know side of the cube is 2 inches. Since cube has 6 faces, its formula for the surface area is 6s2 =6×22=6×4=24 inches.
Therefore, Surface area of the cube will be 24 square inches.