# How do you find the square root of 3969?

Sep 18, 2015

=color(blue)(63

#### Explanation:

The square root can be found out by prime factorising $3969$ (express $3969$ as a product of its prime factors)

sqrt(3969)=sqrt(3*3*3*3* 7*7

=sqrt(3^2 *3 ^2 *7^2

$= 3 \cdot 3 \cdot 7$

=color(blue)(63