Part A and part B. Would anyone give me a hand on how to do this problem?

Lessons Assessments Gradebook Email 3 Tools (04.03 HC) My Cour Sand is being poured into an open right circular cone container, as shown in the figure. The height of the container is 8 cm, and the diameter of the opening is 8 cm. Sand is being poured in so that its depth h is changing at a constant rate of - cm/min. 10 8 cm 8 cm (Note: The volume of a cone of height h and radius r is given by V = ~ xr2h.) Part A: Find the volume V of sand in the container when h = 4 cm. Indicate units of measure. (10 points) Part B: Find the rate of change of the volume of sand in the container, with respect to time, when h = 4 cm. Indicate units of measure. (20 points) X D | + 7 5 3 B 2 * @ Source | V C BIUS XX IX |13 :| |99 = = 3 8 Styles Format Font Size - A - A - | ? Next Ques Previous Question Question 1 (Not Answered) v 0 MacBook Pro