Find the rate of change of the area of a circle per second with respect to its radius r when r = 10 cm.
Answer & explanation
Correct answer: option 3
da/dr = \[2r\pi \]
Find the rate of change of the area of a circle per second with respect to its radius r when r = 10 cm.
Correct answer: option 3
da/dr = \[2r\pi \]