4. [/2 Points] PRACTICE ANOTHER (a) Suppose that a volcanologist takes measurements that show that when the cone is 100 meters wide and 50 meters tall, its height is increasing at 0.5 meters/day. If the assumption is made that the cone will retain Its height-width proportion, what IS the rate at which the volume of rock is being released by the volcano? A volcanic cone spews ne particles of rock which land in the surrounding area and cause the size of the cone to increase. m3/day (b) Suppose that the volcanologist takes more measurements and realizes the original assumption was poorly made, because the Width is increasing at 0.9 meters/day. What would be the new finding for the rate at which the volume of rock is being released by the volcano? m3/day