Question

Find the side of a square in which it's area is 441 metres square

Answer 1

hope! it will help you

Answer 2

square have side of equal length so

let A be the one side
then

A^2 will be it's area

so
$\sqrt{ {a}^{2} }$
will do the answer
ie
$\sqrt{441}$

√441 = 21 meter