Question

what is the length and breadth of rectangle , perimeter is 104and area is 660cm​

Answer 1

Answer:

lb=660

l=660/b

2(l+b)=104

l+b=52

$\frac{660}{b} +b=52\\\frac{660+b^{2} }{b} =52\\660+b^{2} =52b\\b^2-52b+660=0\\b^2-30b-22b+660=0\\b(b-30)-22(b-30)=0\\(b-22)(b-30)=0\\b=22,30$

l=30 if b=22

l=22 if b=30

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