1. A cylindrical drum is to be made to hold 208 L of oil. Find the dimensions that will minimize the cost of the metal to manufacture the drum. 2. The velocity graph of a car accelerating from rest to a speed of 120 km/h over a period of 30 seconds is shown. Estimate the distance traveled during this period. Use 6 subintervals with midpoints. Include a sketch showing the approximating rectangles you used. :- {krm'hl 30 40 0 l0 2!] 3t] 1' (seconds) 3. A boat is pulled into a dock by a rope attached to the bow of the boat and passing through a pulley on the dock that is 1 in higher than the bow of the boat. If the rope is pulled in at a rate of l mfs, how fast is the boat approaching the dock when it is 8 rn from the dock