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(1 point) The radius of a spherical watermelon is growing at a constant rate of 2 centimeters per week. The thickness of the rind is always one tenth of the radius. The volume of the rind is growing at the rate cubic centimeters per week at the end of the fifth week. Assume that the radius is initially zero. Preview My Answers Submit Answers(1 point) A stone dropped into a still pond sends out a circular ripple whose radius increases at a constant rate of 3.3 ft/s. (a) How rapidly is the area enclosed by the ripple increasing when the radius is 5 feet? The area is increasing at Oft 2 / s. (b) How rapidly is the area enclosed by the ripple increasing at the end of 9.6 seconds? The area is increasing at ft 2 / s .(1 point) A 16 foot ladder is leaning against a wall. If the top slips down the wall at a rate of2 ftis, how fast will the foot be moving away from the wall when the top is 11 feet above the ground? The foot will be moving at D We. (1 point) A boat is pulled into a dock by means of a rope attached to a pulley on the dock. The rope is attached to the front of the boat, which is 8 feet below the level of the pulley. If the rope is pulled through the pulley at a rate of 14 ft/min, at what rate will the boat be approaching the dock when 120 ft of rope is out? The boat will be approaching the dock at ft/min