Question

cost of fencing a square field at Rs. 20 per meter is Rs. 20 per meter is Rs. 10,080, How much will it cost to lay a three meter wide pavement along the fencing inside the field at Rs. 50 per sq. meter? pl explain soon​

Answer 1

Answer:

Rs 37350

Step-by-step explanation:

Total cost of fencing= Rs 10080

Cost of fencing per m= Rs 20

Perimeter of square field= 10080/20=504m

perimeter of square= 4s

504=4s

s=126

Area of the square field=s^2= 126^2= 15876 sq m

Now if we remove the pavement area then the dimensions of new square field will be S= 126-3=123m

Area of the square field without pavement= S^2=123^2= 15129 sq. m

Area of pavement= (15876-15129)sq m= 747 sq m

Cost of laying pavement per sq m= Rs 50

Total cost for laying pavement= Rs 50(747)= Rs 37350

Answer 2

Answer:

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