Calculate Side Length: Finding Square Dimensions from Area 144

Question

A square has an area of 144.

How long are its sides?

00:00 Find the side of the square

00:03 Use the formula for calculating the area of a square (side squared)

00:08 Substitute appropriate values and solve for the side

00:13 Extract the root

00:23 And this is the solution to the question

00:26 Chapter Title

Remember that the area of a square is equal to the side of the square raised to the 2nd power.

We replace the data in the formula:

$144=L^2$

Then we calculate the root:

$\sqrt{144}=L$

$L=12$

$12$