Question

the length and the breadth of a rectangular field are in the radius 7:4 the cost of fencing the field at rupees 25 per metre is rupees 3300 find the dimension of the field​

Answer 1

ratio=7:4

l=7x

b=4x

cost of fencing field 1m=₹25

cost of fencing x m=₹3300

so, 25×perimeter =3300

=>perimeter =3300/25

=>perimeter =132m

so, 7x+4x=132

=>11x=132

=>x=132/11

=>x=12m