Question

The area of square is 81 $c{m}^2$, find the perimeter of the square.

• A. 9 cm
• B. 18 cm
• C. 27 cm
• D. 36 cm

Answer 1

The correct option is D 36 cm

Area of square = $sid{e}^2$
81 = $sid{e}^2$
Hence side = $\sqrt{8}1$ = 9 cm
Perimeter of square = 4 $\times$ side
= 4 $\times$9
= 36 cm