Posted by P-Air on October 22, 2002 at 13:59:04:
A spherical ballon is inflated with gas at the rate of 800 cubic centimenters per min. How fast is the radius of the balloon increasing at the moment the radius is 30 cm.
[a sphere with radius r has a voume 4(pi)r^3/3
Any help would be appriciated.
And Thanks in Advance