Question

The length of a rectangular field is thrice its breadth. If the area of the field is 7500sqm. Find the cost of fencing the field at the rate of Rs.20 per metre. answer full and fast to be marked as brainlist​

Answer 1

Answer:

Let breadth = x m

Given length is 3 times Breadth = 3x m

Area of reactangluar field = l x b = 3x*x = 3x² = 7500

=> x= 50 m

=> Breadth = 50 m

=> length = 3x = 150 m

Perimeter = 2(l+b) = 2(50+150)

= 400 m

Cost of fencing per m = Rs 10

=> Total Cost = 400 x 10 = Rs. 4000