Question

A square having area $100$ sq cm will have perimeter:

• A. $10$$cm$
• B. $20$$cm$
• C. $40$$cm$
• D. $100$$cm$

Answer 1

The correct option is C

$40$$cm$

Area of a square is given by Side × Side.
⇒ Side × Side = $100c{m}^2$.
⇒ Side = $\sqrt{100}=10$$cm$.

Also
Perimeter of the square = $4\times side=4\times 10=40cm$.

Hence Option C is Correct.