Question

What will be the length of the side of a square whose area is 9 $c{m}^2$ ?

• A. 3 cm
• B. 4.5 cm
• C. 2.25 cm
• D. 6 cm

Answer 1

The correct option is A 3 cm

Area of a square is given by Side $\times$ Side
$\Rightarrow$ Side $\times$ Side = 9 $c{m}^2$
$\Rightarrow$ Side = 3 cm
When we look at the factors of 9,
9 = 9 $\times$ 1
9 = 3 $\times$ 3
Since the sides have to be equal, it has to be 3 $\times$ 3 = 9
$\Rightarrow$ Side = 3 cm
$\therefore$ The length of the side of the square will be 3 cm.