According to the function, for each increase of 18 cm in the length o…

|Question 14Math

Source Texts

Text

c (r) = \frac{2}{5} (2 π r)

The function c gives the partial length, in centimeters (cm), of the circumference of a circle with a radius that measures r cm.

According to the function, for each increase of 18 cm in the length of the radius, this partial length of the circumference increases by

k π

cm. What is the value of k?

72/5

14.4