Question

. Find the cost of erecting a fence round a square field
whose area is 6.25 hectares at the rate of 150 per metre​

Answer 1

Answer:

1500

Step-by-step explanation:

the area is 6.25 hectares so the side must be sq root of it.

side s= 2.5m

the perimeter is 4s=10m

cost per meter for fencing is 150/meter

so total cost is rs 1500

I.e perimeter*cost per meter

Answer 2

Answer:

Solution:

Area of the square field =(9×10000)m2=(9×10000)m2

=90000m2=90000m2

Length of each side of the field =90000−−−−−√=90000

=300m=300m

Perimeter of the field =4×300=4×300

=1200m=1200m

Cost of fencing = 1200×721200×72

Answer : 4200