dr/dt=(1/2)(16t)-1/2(16)=2/√t
At t=31 this is 2/sqrt(31)
Jackie S.
asked • 10/13/21Derivatives help
The radius of a circular oil spill after t minutes is given by r(t)=√16t. Find the instantaneous rate at which the radius is growing after 31 minutes.
____ ft/min
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