Question

The area of a square shaped field is 36 hectares. Find the perimeter of the field in metres.

• A. 1800 m
• B. 2400 m
• C. 2800 m
• D. 3200 m

Answer 1

The correct option is B 2400 m

Let the length of each side of the square shaped field be a.
$\Rightarrow$ Area of the field = $a^2$

We know that 36 hectares = 36× 10,000 hectares
($\because$ 1 hectare = 10,000 $m^2$)

So, a × a = 360000 $m^2$
$\Rightarrow$ a × a = 600 x 600
$\Rightarrow$ a = 600 m

So, the length of each side of the square shaped field is 600 m.

Perimeter of the field = 4a = 4 × 600 = 2400 m
Therefore, perimeter of the square shaped field is 2400 m.