outer ripple is increasing at a constant rate of 2 feet per second. When the radius is 10 at rate is the total area A of the disturbed water changing?

Elementary Geometry For College Students, 7e
7th Edition
ISBN:9781337614085
Author:Alexander, Daniel C.; Koeberlein, Geralyn M.
Publisher:Alexander, Daniel C.; Koeberlein, Geralyn M.
Chapter9: Surfaces And Solids
Section9.3: Cylinders And Cones
Problem 6E: Suppose that r=12 cm and h=15 cm in the right circular cylinder. Find the exact and approximate a...
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9. A pebble is dropped into a pond, causing ripples in the form of concentric circles. The radius r of
the outer ripple is increasing at a constant rate of 2 feet per second. When the radius is 10 feet, at
what rate is the total area A of the disturbed water changing?
Transcribed Image Text:9. A pebble is dropped into a pond, causing ripples in the form of concentric circles. The radius r of the outer ripple is increasing at a constant rate of 2 feet per second. When the radius is 10 feet, at what rate is the total area A of the disturbed water changing?
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