Hi,Would really appreciate help with text in red.thanks.

one of the question asks for region of integration and evaluation of e^(2x+y)dydx where inner integral goes from x to 3x;outer integral froom o to 4.

but I have issues with this part:-how should I solve?

the solid sphere x^2+y^2+z^2 is less than or equal R^2 has a hole bored through it by the solid vertical cylinder x^2+y^2 less than or equal to Q^2 where

0<Q<R.

calculate volume of part of the sphere that is removed.