4.2 Related Rates (#differentiation) Solve the following problems using the related

rates method. (Adapted from Stewart)

(a) A spherical iron ball 6 cm in diameter is coated with a layer of ice with uniform

thickness. If the ice melts at a rate of 25 cm³/min how fast is the thickness of

the ice decreasing when it is 4 cm thick?

4/n4.2 Related Rates (#differentiation) Solve the following problems using the related

rates method. (Adapted from Stewart)

(a) A spherical iron ball 6 cm in diameter is coated with a layer of ice with uniform

thickness. If the ice melts at a rate of 25 cm³/min how fast is the thickness of

the ice decreasing when it is 4 cm thick?

4