I need help please on a calculus problem. I am trying to teach myself and am doing fair. I am stuck on this though. Question:find the volume using CROSS SECTIONS that are squares. base is bounded by y = x + 1 y = x squared - 1 cross sections are squares perpendicular to the x axis I know to use the area = side squared due to it being a square I set the 2 equations equal to find the integral goes from -1 to 2 I took the top minus bottom to get equation of (x + 1 ) - ( x squared - 1) which becomes all squared due to the definition of area of a square so I get x^4 - x^3 -2x^2 -x^3 +x^2 +2x -2x^2 +2x +4 then I combine like terms and integrate? I don't get the answer answer should be 8.1 it says. thanks in advance.