Question

If the area of a square is $121c{m}^2$, then its perimeter will be

• A. 10 cm
• B. 11 cm
• C. 44 cm
• D. 40 cm

Answer 1

The correct option is C 44 cm

Let the length of each side of the square be $a$.

Area of the square = (side length)${}^2$
$\Rightarrow a^2$ = $121c{m}^2$
$\Rightarrow a=11cm$

Perimeter of the square
$=4a=4\times 11=44cm$

Hence, the perimeter of the given square is 44 cm.