Rectangle Area: Solving with Width x and Length x/2 When x=4

Question

The width of a rectangle is equal to $x$ cm and its length is equal to $\frac{x}{2}$ cm.

$x=4$

What is the area of the rectangle?

00:00 Determine the rectangle's area

00:03 Apply the formula for calculating the area of a rectangle (side x side)

00:09 Substitute in the X value according to the given data and solve for the area

00:17 This is the solution

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

Let's put the data into the formula:

$S=x\times\frac{x}{2}=\frac{x^2}{2}$

Since we know that $x$ equals 4, we can substitute it into the formula and solve accordingly:

$S=\frac{4^2}{2}=\frac{16}{2}=8$