Question

What is length of a side of sqaure whose area is 441

Answer 1

length of side = 21

Explanation:

the area (A) of a square is calculated as

A = s² ( s is the length of a side )

given A = 441 then

s² = 441 ( take square root of both sides )

`√(s^2)` =
`√(441)` , that is

s = 21

That is the length of a side is 21 units