U Calculus Question 02

4. (a) Set up the integral for finding the volume of a sphere of radius r (i) using discs, and (ii) using shells. Provide diagrams whenever necessary.
(b) Solve the integral you obtained in part (ii) above, thereby giving you the familiar formula for the volume of a sphere.

5. Repeat question 4, this time using a right circular cone with height h and radius r


thanks so much