Calculate Rectangle Side Length: Finding AB When Area = 27 and Height = 3

Question

The area of the rectangle below is equal to 27.

AC = 3

Calculate AB.

00:00 Find AB

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

00:06 We'll substitute appropriate values according to the given data and solve for AB

00:12 And this is the solution to the problem

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

Let's insert the known data into the formula as follows:

$S=AB\times AC$

$27=AB\times3$

Finally let's divide both sides by 3:

$AB=9$