Asked by Anonymous

A circular oil slick is expanding with radius, r in yards, at time t in hours given by r=2.5t−0.3t2, for 0≤t≤10.
Find a formula for the area in square yards, A=f(t), as a function of time.

f(t)=

HELP PLEASE!

Answers

Answered by bobpursley
area=PI r^2=PI (2.5t-.3t^2)^2
= pi t^2(6.25-1.5t+.09t^2)
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