A cupful of olive oil falls on the floor forming a circular puddle.Its radius is increasing at a constant rate of 0.2 cm/sec.What is the rate of increase in the area of the olive oil when its circumference measures 20 $\pi$ cm?

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The Answer of A cupful of olive oil falls on the floor forming a circular puddle.Its radius is increasing at a constant rate of 0.2 cm/sec.What is the rate of increase in the area of the olive oil when its circumference measures 20 $\pi$ cm?

A Cupful of Olive Oil Falls on the Floor Forming π\piπ

A Cupful of Olive Oil Falls on the Floor Forming $\pi$