Answer
The ratio is 8 to 1.
Work Step by Step
Area is proportional to h and to $r^2$. Thus, If we double h and r, area is: $2\times2^2=8$ times greater. Thus, the ratio is 8 to 1.
Elementary Geometry for College Students (5th Edition)
by Alexander, Daniel C.; Koeberlein, Geralyn M.
Published by
Brooks Cole
ISBN 10:
1439047901
ISBN 13:
978-1-43904-790-3
Chapter 9 - Section 9.3 - Cylinders and Cones - Exercises - Page 432: 36
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