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Example 4.7: The volume of a cube is 729 cubic centimeters. Calculate itstotal surface area. |
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Answer» 1) let the edge of the cube = a cm volume(v)= a^3 a^3 = 729 a^3 = (9cm)^3 a = 9cm 2)lateral surface area = 4 a^2= 4* 9^2= 4* 81=324cm^2 total surface area = 6a^2= 6* 9^2= 6*81=486 cm^2 |
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