A balloon is being filled with helium at the rate of 4ft^3/min. The rate, in square feet per minute, at which the surface area is increasing when volume is 32pi/3 ft^3 is A) 4pi B)2 C)16pi D) 1/4pi E) 1/8pi

Question

A balloon is being filled with helium at the rate of 4ft^3/min. The rate, in square feet per minute, at which the surface area is increasing  when volume is 32pi/3 ft^3 is  A) 4pi B)2 C)16pi D) 1/4pi E) 1/8pi

caominhim · Answer

have y'all learned integrals? this will effect how i approach this

anonymous · Answer

it is a related rate problem 
you need to find some relation between the surface area of a sphere and the volume
i don't know it off hand, google it

caominhim · Answer

https://answers.yahoo.com/question/index?qid=20091210175512AAjiOkj