# What is the square root of 7056?

Sep 16, 2015

$84$

#### Explanation:

-Write down the factors of $7056$ and and see if they share the same with the choices.
- For example, if you see $83$ and $85$, you can tell that there is no factor of $83$ or $5$ in $7056$ since they are prime number and eliminate them.
- At this time you verify one by multiplying $84 \times 84$ to verify.

Recheck:

$84 \times 84 = 7056$