The sides of rectangular park are in the ratio 4:3 if the area is 1728msquare find the cost of fencing it at the rate of rs 2.50/m

Area of a rectangle=l×b 1728=3x×4x 1728=12xsqare 12xsqare=1728 Xsqare=1728/12 Xsqare=144 X=squareroot of 144 X=12 Perimeter of rectangle=2(l+b) =2(3x+4x) =2(7x) =14x12 =68 Perimeter=168 Cost of fencing=168×2.50 420.0
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