# Math

posted by
**Naz** on
.

The radius of a circle is decreasing at a constant rate of 0.1 centimeters per second. In terms of the circumference C, what is the rate of the area of the circle, in square centimeters per second?

a. -(0.2)pie C

b. -(0.1)C

c. -(0.1)C/2 pie

d. (0.1)^2C

e. (0.1)^2 pie C