if a side of a square is increased by 15% then by what percent will its area increase?
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Answer:
let normal side be x
15% more side = x +(15/100x)
= 100x +(15x/100)
= 1.15x
area with normal side = x²
area with 15% more side= (1.15x²) ×1.3225x²
therefore, area is increases by 32.25%.
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