Set up the iterated integral for evaluating ModifyingBelow Integral from nothing to nothing Integral from nothing to nothing Integral from nothing to nothing With Upper D f left parenthesis r comma theta comma z right parenthesis r dz dr d thetaDf(r,,z)rdzdrdover the region D, where D is the solid right cylinder whose base is a region in the xy-plane that lies inside the cardioid r equals 7 plus 7 cosine thetar=7+7cosand outside the circle r equals 7r=7,and whose top lies in the plane z equals 21z=21.