Solve for X: Rectangle Area 30 with Side Length 2X and Height 3

Question

The area of the rectangle below is equal to 30.

AC = 3

AB = 2X

Calculate X.

00:00 Find X

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

00:06 Let's substitute appropriate values according to the given data and solve for X

00:11 And this is the solution to the problem

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

We begin by inserting the given data into this formula:

$30=3\times2x$

$30=6x$

Lastly we divide both sides by 6:

$x=5$