Length (or Width) of a Square

LAST UPDATE: February 2nd, 2022

Method #1 – Length from Area

Formula – How to calculate the length of a square using the area

Length = √Area

Example

A square has an area of 100.

Length = √100 = 10

Method #2 – Length from Perimeter

Formula – How to calculate the length of a square from the perimeter

Length = Perimeter ÷ 4

Example

A square has a perimeter of 40.

Length = 40 ÷ 4 = 10

Method #3 – Length from the diagonal

Formula – How to calculate the length (or width) of a square using the diagonal

Length = √(Diagonal2 ÷ 2)

Example

A square has a diagonal length of 14.

Length = √(142÷ 2)

Length = √(196 ÷ 2)

Length = √98

Length = 9.899