the lengthand and the breadth of a rectangular field are in the ratio of 5:3 the. The area of the field is 2160 square.cm. If a fence is to be made at the rate of 350 per metre, how much will it cost
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L:B = 5:3
L=5x cm B=3x cm
Area= L*B = 5x*3x= 8x^2 =2160
X^2=2160/8=270
X=√270=3√30cm
L=5*3√30=15√30cm
B=3*3√30=9✓30cm
Perimeter=2(l+b)=2(15✓30+9√30)=2*24✓30=48✓30cm=0.48*✓30 cm
Cost=0.48*✓30*350=168✓30₹
L=5x cm B=3x cm
Area= L*B = 5x*3x= 8x^2 =2160
X^2=2160/8=270
X=√270=3√30cm
L=5*3√30=15√30cm
B=3*3√30=9✓30cm
Perimeter=2(l+b)=2(15✓30+9√30)=2*24✓30=48✓30cm=0.48*✓30 cm
Cost=0.48*✓30*350=168✓30₹
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