Can someone help me with 19,20,and 21 will mark brainiest for the first answer and it has to be correct
1 answer:
You might be interested in
The volume is given by the triple integral
which evaluates to
where the coefficient 4 comes from integrating with respect to
, and the integrand 
comes from integrating with respect to 
.
which evaluates to
where the coefficient 4 comes from integrating with respect to