Question

The area of a square is $225$ sq. units. Find the perimeter of this square.

• A. 60 ${\text{unit}}^2$
• B. 15 unit.
• C. 30 unit
• D. 60 $\text{unit}$

Answer 1

The correct option is D 60 $\text{unit}$

Given, area of square $=225$ sq. units
Let $x$ be the length of the square.
As we know,
Area of a square $={\text{side}}^2=x^2$
$\Rightarrow 225=x^2$
$\Rightarrow x=\sqrt{225}=\sqrt{15\times 15}=15$ unit

Perimeter of square $=4\times x=4\times 15=60$ unit.
Option (d) is correct.