Question

The length and breadth of a rectangular field are in ratio 3:2 If area of field is 3456 sq m then find the cost of fencing it at rupees 60per m​

Answer 1

Step-by-step explanation:

let dimension = 3x,2x

area = l× b

3456sq.m= 3x×2x

3456sq.m= 6x^2

3456/6= x^2

576=x^2

√576=x

26=x

length =3×26=78m

breadth= 2×26= 52m

perimeter = 2(l+b)

=2(52+78)

=2×130

= 260m

cost if 1 m= ₹60

so, cost of 260m = 60 × 260

= ₹15600