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If each edge of a cube is increased by 50%, the total surface area increases by what percent?

Class 8Surface Area of Cuboid and CubeMensuration

A125%
B50%
C100%
D225%

Step-by-Step Solution

New edge =

1.5 a

. New TSA =

6 (1.5 a)^{2} = 6 \times 2.25 a^{2} = 2.25

times old. Increase = 1.25 = 125%.

Answer: A) 125%

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