Question

The length and breadth of a rectangle field is 4 as to 3 . If the area is 3072msquare find the cost of fencing it at the rate of rs 4 per meter

Answer 1

let the length 4x
let the breadth 3x
area=l*b=4x*3x
acc. to ques
4x*3x=3072
x^2=256
x=16
l=64m, b=48m
perimeter of rect.=2*(l+b)=2*(64+48)=224m
acc. to ques
cost of fencing=4*224=896rs