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Please help with explanation! Helium is pumped into a spherical balloon at a rate of 5 cubic feet per second. How fast is the radius

Please help with explanation!

Helium is pumped into a spherical balloon at a rate of 5 cubic feet per second. How fast is the radius increasing after 3 minutes? Note: The volume of a sphere is given by V = (4/3)17-3. Rate of change of radius (in feet per second) =

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