Search results

i got the first 3..im trying to do the rest :) ...i had to run after the engineering grads in my uni to help me out :) ...n wow! now i actually get it!

thanx :D

1) A spherical balloon is being inflated at a rate of 3(pi) m^3/min. twelve minutes after the inflation first begins, what is the rate of increase of the diameter of the balloon with respect to the time. 2) A weather balloon with radius 9m springs a leak, losing air at 171(pi) m^3/min. Find...

:( i got that but dunno wut to do after that

A weather balloon with radius 9 meters springs a leak, losing air at 171 (pi) m^3/min. Find the rate of decrease of the radius after 4 minites. I understand that we are given the dv/dt (= -171). I used the formula for the volume of a sphere. But I don't understand how to find the answer after 4...