Aspherical helium balloon has a diameter of 30 cm. how much helium is needed to fill the balloon, in cubic centimeters? round your answer to the nearest centimeter

From V= 4/3*pi*r^3 
dV/dt = 4pi(r^2)dr/dt 
so when dV/dt=30 and r = 19 
30 = 4pi(361)dr/dt 
dr/dt = 30/[4pi(361)] 

now in 
A = 4pir^2 
dA/dt = 8pi(r)dr/dt 
= 8pi(19)*30/[4pi(361)] 
= you finish it.
HOPE THIS HELPS.

Iwould like to think so. what’s the question you need with?

The correct awnser is 29.76 pounds.