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If the edge of a cube is doubled, its total surface area becomes how many times the original?

Class 8Surface Area of Cuboid and CubeMensuration

A4 times
B2 times
C6 times
D8 times

Step-by-Step Solution

TSA =

6 a^{2}

. With edge

2 a

, TSA =

6 (2 a)^{2} = 24 a^{2} = 4 \times 6 a^{2}

. So it becomes 4 times.

Answer: A) 4 times

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