Question

The length of a rectangular field is three times of it's breath . If the area of the field is 75metersquare, find the cost of fencing the ground 5 times at the rate of Rs80 per meter

Answer 1

Answer:16000

Step-by-step explanation

l=3b (given)

area of the rectangular field=l*b

i.e., 3b*b=75

b=5

l=3b

l=3*5=15

perimeter of rectangular field=2(l+b)

2(15+5)=40

5 times fencing the ground=40*5=200

cost of fencing=80*200=16000