Question

Cost of erecting a fence around a square field of 625 hectares at 15 paise per metre is

Answer 1

Given: area of the square field is 625 hectares

To find: the cost of fencing the field at 15 paise per meter

Solution:

625 hectares = 625 × 10000 sq. m = 6250000 sq. m

Given, area of the field = 6250000 sq. m

Then the area of each side of the square field is

= √(area)

= √6250000 m

= 2500 m

Now the perimeter of the square field is

= 4 × length of a side

= 4 × 2500 m

= 10000 m

Therefore the cost of fencing the square field at 15 paise per meter is

= 10000 × 15 paise

= 150000 paise

= 150000 ÷ 100 rupees

= 1500 rupees