Algebra 2 (1st Edition)

Published by McDougal Littell
ISBN 10: 0618595414
ISBN 13: 978-0-61859-541-9

Chapter 8 Rational Functions - 8.4 Multiply and Divide Rational Expressions - 8.4 Exercises - Problem Solving - Page 580: 52a


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Work Step by Step

The surface area S and the volume V of a cylindrical can are given by $S=2\pi r^2+2\pi rh$ and $V=\pi r^2 h$ where $r$ is the radius and $h$ is the height. An expression for the efficiency ratio is: $\frac{S}{V}=\frac{2\pi r^2+2\pi rh}{\pi r^2h}=\frac{\pi r(2r+2h)}{\pi r^2 h}=\frac{2(r+h)}{rh}$
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