Question

A square tile has an area of 324 square inches. what is the perimeter of the square tile in inches?

Answer 1

The formula of an area of a square:
`A=a^2`

a - side

We have:
`A=324\ in^2`

substitute:

`a^2=324\to a=√(324) \to a=18\ in`

The fromula of a perimeter of a square is:
`P=4a`

substitute:

`P=4\cdot18=72\ in^2`