The region between f(x) and g(x) is

rotated around the x-axis to form a solid.

Each slice (perpendicular to the x-axis) is

an annulus (the region between 2 circles).



Represent the volume of this solid

as a definite integral.



Volume = ab\displaystyle {\int_{{{a}}}^{{{b}}}}   dx



Type 3.14 for "pi"