A stone dropped into a still pond sends out a circular ripple whose radius increases at a constant rate of 2.1 ft/s.

Big Ideas Math A Bridge To Success Algebra 1: Student Edition 2015
1st Edition
ISBN:9781680331141
Author:HOUGHTON MIFFLIN HARCOURT
Publisher:HOUGHTON MIFFLIN HARCOURT
Chapter10: Radical Functions And Equations
Section: Chapter Questions
Problem 9CR
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A stone dropped into a still pond sends out a circular ripple whose radius increases at a constant rate of 2.1 ft/s.

 

(a) How rapidly is the area enclosed by the ripple increasing when the radius is 5 feet?
ft /s.
The area is increasing at
(b) How rapidly is the area enclosed by the ripple increasing at the end of 9.8 seconds?
ft2 /s.
The area is increasing at
Transcribed Image Text:(a) How rapidly is the area enclosed by the ripple increasing when the radius is 5 feet? ft /s. The area is increasing at (b) How rapidly is the area enclosed by the ripple increasing at the end of 9.8 seconds? ft2 /s. The area is increasing at
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