HCF= highest common factor
LCM= least common multiple
You would multiply 8m by m and 6 separately. it would be 8m^2 + 48m
Consider a circle with radius
centered at some point
on the
-axis. This circle has equation

Revolve the region bounded by this circle across the
-axis to get a torus. Using the shell method, the volume of the resulting torus is

where
.
So the volume is

Substitute

and the integral becomes

Notice that
is an odd function, so the integral over
is 0. This leaves us with

Write

so the volume is

Answer:
316.25
I hope I Got The Right Answer