Question

The area of a square field is 81hectares. find the cost of fencing the gield with a wire at the rate of $2.25per meter​

Answer 1

Answer:

1hect= 10000 m square

Therefore 81 hect = 81 x 10000 = 810000 m square

Area of square = s^2

So, 810000 = s^2

s =

$\sqrt{810000 \\ }$

Therefore s = 900 m

Perimeter = s x 4

Perimeter = 900 x 4

Perimeter = 3600 m

fencing cost for 1 m = 2.25 dollar per m

Therefore for 3600 m = 2.25 dollar x 3600

Total cost = 8100 dollar