Rectangle Area Problem: Find Side Length AB When Area = 24 and AC = 3

Question

The area of the rectangle below is equal to 24.

AC = 3

What is the length of side AB?

00:00 Find AB

00:03 The formula for calculating rectangle area is width(AB) multiplied by length(AC)

00:07 We'll substitute appropriate values according to the given data and solve for AB

00:13 And this is the solution to the question

The area of the rectangle is equal to its length multiplied by its width.

Let's begin by inserting the known data into the formula:

$S=AB\times AC$

$24=AB\times3$

Let's now divide both sides by 3:

$AB=8$