Elementary Technical Mathematics

Published by Brooks Cole
ISBN 10: 1285199197
ISBN 13: 978-1-28519-919-1

Chapter 12 - Section 12.5 - Circles - Exercise - Page 410: 22



Work Step by Step

To find the diameter of the metal duct, we use the formula for the area of a circle: $A=\frac{\pi*d^{2}}{4}$ where we have the area: $A=113~in^{2}$ Solving for the diameter, $d$, gives: $A=\frac{\pi*d^{2}}{4}$ $d=\sqrt {\frac{4A}{\pi}}=\sqrt {\frac{4(113in^{2})}{\pi}}=11.99~in\approx12.0~in$
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.