Question

If each edge of a cube is increased by 50% then the percent increase in its surface area is : *
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Answer 1

$\huge\boxed{Answer}$

After 50% increase,

each edge of the cube becomes 150/100 of the original.

Thus, the surface area of the cube becomes (150/100)^2 = 225/100 of the original.

Hence, increase in perecentage of surface area = (225-100) = 125% .