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.

00:06 Let's find the value of A B.

00:09 The area of a rectangle is its width, A B, times its length, A C.

00:15 Use the given numbers to solve for A B.

00:20 And there you have the solution!

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:

$AB=9$