Tick (✓) the correct answer:


Tick (✓) the correct answer:

If each side of a cube is doubled, its surface area

(a) is doubled

(b) becomes 4 times

(c) becomes 6 times

(d) becomes 8 times


(b) becomes 4 times.

Let the side of the cube be a units.

Surface area = 6a2 sq units

Now, new side = 2a units

New surface area = 6(2a2 ) sq units = 24a2 sq units.

Thus, the surface area becomes 4 times the original area.

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