Question

A carpenter estimates the roof to be 375 ft2. The rectangular roof measures 18 feet wide by 22 feet long. What is the percent error?

Answer 1

Answer: -5.3%

Step-by-step explanation:

First, find the actual area of the roof:

Area of Rectangle = L x W

18 x 22 = 396

Next, find the Percent Error:

Percentage Error = ((Estimated Number - Actual Number)/ Actual Number)) x 100

((375 - 396)/ 396)) x 100 = -5.3%