Arithmetic Ability
Area

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Q.

If each side of a square is increased by 25%, find the percentage change in its area?

View Answer

Correct choice: B

Explanation:

let each side of the square be a , then area = a2 As given that The side is increased by 25%, then New side = 125a/100 = 5a/4 New area = (5a4)2 Increased area= 25a216−a2 Increase %=[9a2/16]a2*100 % = 56.25%
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