Find the Side Length of a Square with Area 25: Basic Geometry Problem

Question

A square has an area of 25.

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)

00:09 We'll substitute appropriate values and solve for the side

00:15 We'll extract the root

00:20 When extracting a root there are always 2 solutions

00:25 The side length must be greater than 0

00:30 And this is the solution to the question

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

Now, we replace the data in the formula:

$25=L^2$

We extract the square root:

$\sqrt{25}=L$

$L=5$

$5$