Question: A circular metal disk is heated and its radius is changing at a rate of 0.02 m/s. Find the rate at which the area will

A circular metal disk is heated and its radius is changing at a rate of 0.02 m/s. Find the rate at which the area will change when the radius is 150cm? Also state the following

The area of the disc is given by

dr/dt	Answer 1Choose...Pi. r0.218.851502.Pi. r0.02
dA/dt =	Answer 2Choose...Pi. r0.218.851502.Pi. r0.02
dA/dr	Answer 3Choose...Pi. r0.218.851502.Pi. r0.02

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