Square Root Problem: Finding Side Length When Area = 121

Question

A square has an area of 121.

How long are it 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 to find the side

00:12 Extract the root

00:22 And this is the solution to the problem

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

Now we replace the data in the formula:

$121=L^2$

We extract the root:

$\sqrt{121}=L$

$L=11$

$11$