3.A cone-shaped paper drinking cup is to hold 40 cm^3 of water. Find the height and radius of the cup that will require the least amount of paper.

4. At time t = 0 a car moves into the passing lane to pass a slow-moving truck. The average velocity of the car from t = 1 to t = 1 + h is v ave = 3 ( h + 1 ) 2.5 + 580 h - 3 10 h . Estimate the instantaneous velocity of the car at t = 1 , where time is in seconds and distance is in feet