Posted by Joel on .
An ice cube that is 3 cm on each side is melting at a rate of 2 cm cubed per minute. how fast is the length of the side decreasing?

Business Calculus 
Reiny,
given: dV/dt = 2 cm^3/min
V= x^3
dV/dt = 3x^2 dx/dt
2 = 3(9)dx/dt
dx/dt = 2/27 cm/min
decreasing at 2/27 cm/min