A rain drop hitting a lake makes a circular ripple. If the radius, in inches, grows as a function of time in minutes according to r(t) = 15√t + 2, find the area of the ripple as a function of time. Find the area of the ripple at t = 2.

Algebra: Structure And Method, Book 1
(REV)00th Edition
ISBN:9780395977224
Author:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Publisher:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Chapter8: Introduction To Functions
Section8.9: Direct Variation
Problem 15P
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A rain drop hitting a lake makes a circular ripple. If the radius, in inches, grows as a function of time in
minutes according to r(t) = 15√t+2, find the area of the ripple as a function of time. Find the area
of the ripple at t = 2.
Enter the exact answer. For the number 7, you can either type pi or you can click the button with on
it.
Do not enter any commas in your answer.
Transcribed Image Text:A rain drop hitting a lake makes a circular ripple. If the radius, in inches, grows as a function of time in minutes according to r(t) = 15√t+2, find the area of the ripple as a function of time. Find the area of the ripple at t = 2. Enter the exact answer. For the number 7, you can either type pi or you can click the button with on it. Do not enter any commas in your answer.
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