So I'm having trouble starting this problem.

A spherical snowball is melting in such a way that its radius is decreasing at the rate of 0.4 cm/min. At what rate is the volume of the snowball decreasing when the radius is 8 cm?

Any suggestions?

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- March 11th 2010, 05:26 PMascendancy523rate change word problem
So I'm having trouble starting this problem.

A spherical snowball is melting in such a way that its radius is decreasing at the rate of 0.4 cm/min. At what rate is the volume of the snowball decreasing when the radius is 8 cm?

Any suggestions? - March 11th 2010, 06:34 PMsa-ri-ga-ma
Volume of the sphere V = 4/3*π*r^3

dV/dt = 4/3*π*3*r^2*dr/dt.

Substitute the values to get the result. - March 11th 2010, 11:10 PMPeltierC
- March 12th 2010, 01:59 AMsa-ri-ga-ma