Square Root Problem: Finding Side Length When Area = 100

Question

A square has an area of 100.

How long are its sides?

00:00 Find the side of the square

00:03 We'll use the formula for calculating the area of a square (side squared)

00:07 We'll substitute appropriate values and solve to find the side

00:14 Take the square root

00:22 And this is the solution to the question

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

We substitute the data into the formula:

$100=L^2$

Then we calculate the root:

$\sqrt{100}=L$

$L=10$

$10$