A circle has a diameter of 12 inches.

A circle with a diameter of 12 inches. A triangle with base 12 inches and height 6 inches is cut out of the circle.

What is the area of the shaded sections? Use 3.14 for Pi and round to the nearest hundredth.
77.04
95.04
113.04
149.04

The position of a moving particle is given by the position function: f(t)=-9t-t^2-0.2t^3+0.1t^4 0 a. at what time does the particle reverse direction? b. when is the displacement positive? (round one decimal place and answer in interval notation) c. when is the displacement negative? (round one decimal place and answer in interval notation) d. when is the particle’s acceleration positive? (round one decimal place and answer in interval notation) e. when is the particle’s acceleration negative? (round one decimal place and answer in interval notation)