Question

HELP URGENT! EXAM AFTER 3 HOURS, INTEGRATION

Answer 1

can anybody explain me how to find volume integration in short?

Answer 2

Question Attached

Answer 3

\[V = \pi \int\limits_{-2}^{2}R^{2}(x) - r^{2} (x) dx\]
\[R(x) = (9-x^{2}) +1\]
\[r(x) = (x^{2} +1) +1\]