# math

the length of a rectangle exceeds its breadth by 4cm. The length and breadth are increased by 3 cm .The area of the new rectangle will be 81cm square more than the given rectangle .Find the dimensions of the given rectangle?

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1. given original width x and length y,

y = x + 4
(x+3)(y+3) = xy+81

x=10
y=14

check:
14 = 10+4
14*10 = 140
(10+3)(14+3) = 13*17 = 221 = 140+81

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posted by Steve
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posted by kk

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posted by Aastha

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