Question
A spherical balloon is losing air at the rate of 2 cubic inches per minute. How fast is the radius of the ballon shrinking when the radius is 8 inches.
Answers
dV = surface area * dr
so
dr/dt = dV/dt/(4 pi r^2)
dr/dt = 2 /(4 pi *64)
so
dr/dt = dV/dt/(4 pi r^2)
dr/dt = 2 /(4 pi *64)
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