Question

find the square root of 2916
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Answer 1

√2916 = 54

The best way to find the square root of a number is to perform it's factorisation (prime factorisation).

$\begin{array}{c |c}2&2916 \\ 2&1458 \\ 3&729 \\ 3&243 \\ 3&81 \\ 3&27 \\ 3&9 \\ 3&3 \\ &1\end{array}$

Make pairs of similar terms

$\rm \sqrt{2916} = 2\times 3 \times 3 \times 3 = 6 \times 9 = 54$