Question

the area of a rectangle is 75 square centimeters. the rectangle is 5 centimeters wide. how long is the rectangle? a 70 cm b 15 cm c 65 cm d 8 cm

Explanation:

Step1: Recall area formula

The area formula of a rectangle is $A = l\times w$, where $A$ is area, $l$ is length and $w$ is width.

Step2: Rearrange formula for length

We can rewrite the formula as $l=\frac{A}{w}$.

Step3: Substitute values

Given $A = 75$ square - centimeters and $w = 5$ centimeters, then $l=\frac{75}{5}=15$ centimeters.

Answer:

B. 15 cm