Question

The value of $\sqrt{484}$ is equal to

• A. $=28$
• B. $=22$
• C. $=32$
• D. $=38$

Answer 1

The correct option is B

$=22$

$\sqrt{484}$

$=\sqrt{2\times 242}$

$=\sqrt{2\times 2\times 121}$

$=\sqrt{2\times 2\times 11\times 11}$

$=\sqrt{2^2\times {11}^2}$

$=2\times 11$

$=22$