Steve likes to entertain friends at parties with "wire tricks." suppose he takes a piece of wire 56 inches long and cuts it into two pieces. steve takes the first piece of wire and bends it into the shape of a perfect circle. he then proceeds to bend the second piece of wire into the shape of a perfect square. what should the lengths of the wires be so that the total area of the circle and square combined is as small as possible? (round your answers to two decimal places.)

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)