Question

6. Find the cost of erecting a fence around a square field whose
area in 9 hectares of if fencing costs Rs.35 per metre​

Answer 1

Answer:

₹ 42,000

Step-by-step explanation:

1 ha = 10000 m²

Area of the field = 9 ha = 9 * 10000 m² = 90000 m²

Area of a square = L²  = 90000 m²

Length (L) of the square field = √90000 m² = 300 m

Length the fence around a square field is the perimeter of the square field.

Perimeter of the square = 4 * L  =  4 * 300  =  1200 m

The cost of erecting a fence around a square field  = 1200 * 35                     = ₹ 42,000