Question

The side of a square increases by a% then find by what percent does its area increases?

Answer 1

if a side of a square is increased by a% then [2a + (a^2/100)]

if there are two variables X increased by a% and y increased by b% then formula will be a + b + ab/100 but here it is a square so X and y is same and a% and b% is also equal

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