When a stone is thrown into a still water pond, a series of concentric circular rings are spread across the pond and the radius of the disturbed region increases at a rate of 16cm/5. How fast does this area increase when the radius is 6cm? Suggestion: A = nr?.

Elementary Geometry for College Students
6th Edition
ISBN:9781285195698
Author:Daniel C. Alexander, Geralyn M. Koeberlein
Publisher:Daniel C. Alexander, Geralyn M. Koeberlein
Chapter8: Areas Of Polygons And Circles
Section8.5: More Area Relationships In The Circle
Problem 42E: A goat is tethered to a barn by a 12-ft chain. If the chain is connected to the barn at a point 6 ft...
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When a stone is thrown into a still water pond, a series of concentric circular rings are spread across the
pond and the radius of the disturbed region increases at a rate of 16cm/ s. How fast does this area
increase when the radius is 6cm? Suggestion: A = nr².
a)
1152 - 7 cm s
b)
32 T
cm2 /s
c)
192 - T cm2 /s
d)
12- T
cm2 /s
Transcribed Image Text:When a stone is thrown into a still water pond, a series of concentric circular rings are spread across the pond and the radius of the disturbed region increases at a rate of 16cm/ s. How fast does this area increase when the radius is 6cm? Suggestion: A = nr². a) 1152 - 7 cm s b) 32 T cm2 /s c) 192 - T cm2 /s d) 12- T cm2 /s
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