Workkeys Math Practice Test 2026 - Free Math Practice Questions and Study Guide

To determine the width of a rectangle when the area and the length are known, you can use the formula for the area of a rectangle, which is:

Area = Length × Width

In this case, we know the area is 50 cm² and the length is 10 cm. We can rearrange the formula to solve for the width:

Width = Area ÷ Length

Now, substituting the known values into the formula:

Width = 50 cm² ÷ 10 cm

Calculating this gives:

Width = 5 cm

This means that the width of the rectangle is indeed 5 cm, which directly corresponds to the first choice. The calculations support the claim, confirming that the area of the rectangle can accurately be calculated using the dimensions provided. Therefore, the result shows that the width of the rectangle is 5 cm, leading directly to the correct answer.