Example1: Evaluate S SS y dVwhere E is the region that lies below the plane z=x+2 above the xy-plane and between the cylinders x2 + y2 = 1 and x2 + y2 = 4. Solution:​

Afarmer has a large field that is x feet in length. he wants to fence in a rectangular section in the middle of the field , leaving a length of 100 feet of open field behind each end of the fenced rectangle.he also wants the width of the fenced-in space to be 100 feet less than its length. find the expressions to represent the length and width of the fenced section of the field