Question

Simplified outcome of $\sqrt{72}$ is

• A. $6\sqrt{2}$
• B. $2\sqrt{6}$
• C. $12\sqrt{6}$
• D. $6\sqrt{12}$
• E. None of the above

Answer 1

The correct option is A $6\sqrt{2}$

Note: $\sqrt{ab}=\sqrt{a}\times \sqrt{b}$

So, $\sqrt{72}=\sqrt{36\times 2}=\sqrt{36}\times \sqrt{2}=\sqrt{6^2}\times \sqrt{2}=6\sqrt{2}$