Question

The side of rectangle are in the ratio of 5 ratio 4 if its area is 8000 m square find the cost of fencing it at rupees 3.50 per metre

Answer 1

Answer:

Step-by-step explanation:

L:B=5:4

L/B=5/4

4L=5B

L=5B/4

A=8000m^2

A=L*B

5B/4*B=8000

5B^2=32000

B^2=6400

B=√6400

B=80m

L=5*80/4

L=100m

P=2(L+B)

P=2(100+80)

P=2*180

P=360m

Cost of fencing=3.50*360

=1260ruppees