Question

the length and the breadth of the rectangular Garden are in the ratio of 7 is 3 if the area of the field is 525 metres square then find the cost of fencing it @ rupees 75 per metre

Answer 1

i hope it will help u

Answer 2

let the length and breadth be 7x and 3x respectively
area of the rectangular field is 525 sq m
l *b=525
7x*3x=525
21xsq. =525
x sq. =525/21
x square =25
sqare rooting both sides, we get
x =5
length =7x
7*5=35m
breadth =3x
3*5=15 m
perimeter of the field =2(l+b)
2(35 +15)
2 * 50
100 m
Cost of per m =75 rupees
Total cost of fencing 100 m =100*75
rupees =7500