Find the volume of $G$ area which it's upper bound is $u(x, \, y) = 16 + x^2$ , lower bound is $v(x, \, y) = 4 x + 7 y$ , and side bound $x^2 + y^2 =1$.
I denote $h(x,y) = x^2 + y^2 -1$.
I draw this in geogebra I think the black line is the required volume but I don't know how to approach this problem ,any help please , thanks !
