Geometry: Common Core (15th Edition)

Published by Prentice Hall
ISBN 10: 0133281159
ISBN 13: 978-0-13328-115-6

Chapter 1 - Tools of Geometry - 1-8 Perimeter, Circumference, and Area - Practice and Problem-Solving Exercises - Page 64: 18


$A=192\text{ in}^2$

Work Step by Step

The formula for the area of a rectangle is $A=bh$. In order to use this formula, however, we must have the same units for the base and the height. Since there are $12$ inches in a foot, we multiply the number of feet of the base by $12$ to get the number of inches of the base: $$4\text{ ft}\times\frac{12\text{ in}}{1\text{ ft}}=48\text{ in}$$We now plug in the values for the base and the height into the formula and simplify: $$A=4\text{ in}(48\text{ in})=192\text{ in}^2$$
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.