An oil slick is expanding as a circle. The radius of the circle is increasing at the rate of 19 meters per day. Express the area of the circle as a function of dd, the number of days elapsed.

A (d) = ?

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3 July, 21:05

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Caiden Church · Answer 1

Area of a circle = pi*r^2

Radius of circle = 19*number of days elapsed = 19d

Therefore: A (d) = pi * (19d) ^2

An oil slick is expanding as a circle. The radius of the circle is increasing at the rate of 19 meters per day. Express the area of the circle as a function of dd, the number of days elapsed.A (d) = ?