Question

If the area of the square $289c{m}^2$, then length of its side is

• A. $15cm$
• B. $16cm$
• C. $17cm$
• D. $18cm$

Answer 1

The correct option is C

$17cm$

Area of the square of side 'a' =$a^2$

Given, Area = $289c{m}^2$

$\Rightarrow 289c{m}^2=a^2$

$\Rightarrow a=\sqrt{289}=17cm$