Question

The area of square field is 9 hectares .find the cost of fencing it at the rate of rs 32 per metre.

Answer 1

$\Huge{\boxed{\red{\mathbb{ANSWER}}}}$

$\bold{Given\:that,}$

Area = 9 hectares

Rate = Rs. 32 / m

$\bold{To\:find,}$

Area = 9 hectares

Area (metre) = 90,000 squared metres

Area of a square = $a^2$

$90,000 m^2 = a^2$

$a = \sqrt{90,000}$

a = 300 m

Therefore, the side of the square field is 300.

Now, we'll find it's perimeter.

Perimeter = 4a

Perimeter = 4(300)

Perimeter = 1200m

Cost of fencing the square field = $Perimeter \times rate$

Cost of fencing the square field = $1200 \times 32$

Cost of fencing the square field = $Rs.\:38,400$

$\large{\bold{\underline{Therefore\:cost\:is\:38,400.}}}$

Answer 2

Answer:

Area = 9 hectares

Rate = Rs. 32 / m

Area = 9 hectares

Area (metre) = 90,000 squared metres

Area of a square =

a = 300 m

Therefore, the side of the square field is 300.

Now, we'll find it's perimeter.

Perimeter = 4a

Perimeter = 4(300)

Perimeter = 1200m

Cost of fencing the square field =

1200 X 32