#### Answer

Width = 40 cm

#### Work Step by Step

You can use properties of equality to solve a literal equation for one variable in terms of others.
In this question, you need to find the width of a rectangle.
First, find the formula of the area of a rectangle.
The formula for the area of a rectangle is:
Area = length $\times$ width
We are given that the rectangle has a length of 5.5 cm and an area of 220$cm^{2}$.
Next, plug in the information given into the formula:
220$cm^{2}$ = 5.5 cm $\times$ width
To find the width, solve the equation. (You can make width the variable x.)
220$cm^{2}$ = 5.5 cm $\times$ x
Divide both sides by 5.5 cm.
$\frac{220cm^{2}}{5.5 cm}$ = $\frac{5.5 cm \times x }{5.5 cm}$
Simplify to get:
40 cm = x