Q wininon Grayson Part II. Free Response Point values for each problem are given in (). 4. Water is poured into a conical paper cup at the rate of 3 cubic centimeters per second. The paper cup measures 8 cm tall and the top has a radius of 4 cm. a.) Use similar triangles to express the radius r in terms of the height h. Be sure to solve your equation for r. (1 point) b.) Determine how fast the water level is rising at the instant the water is 4 cm deep. (The volume of a cone is V = = mrh.) Be sure to include a label. (3 points)