Q8 of 35 Page 74

If the sum of the areas of 6 surfaces of the cube be 216 sq. cm , then let us calculate the volume of the cube.

Let the edge of a cube be a cm.

We know that total surface area of cube is 6a2


According to question,


6a2 = 216


a2 = = 36


a = √36 = 6 cm


As, volume of cube is a3


Therefore, volume = 63 = 216 cubic cm.


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