Question

if the perimeter of a square field is 192 m, find the length of its side. also, find the cost of fencing a side of the square field at the rate of ₹11 per meter.
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Answer 1

Given :

Total cost of fencing =Rs. 10080

Cost of fencing per meter =20

So perimeter =

20

10080

=504 m

So length of square =

4

504

=126 m

width of pavement =3 m

Length of inner square =126−3=120 m

So, area of pavement =Area of Outer square − Area of inner square

=126×126−120×120

Area of pavement=1476 m

2

Cost of pavement =1476×50

∴ Cost of pavement=Rs. 73800

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Answer 2

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