1. [013 Points] DETAILS PREVIOUS ANSWERS SESSCALCZ 12.1.004. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER (a) Estimate the volume V of the solid that lies below the surface 2 = X + 23/2 and above the rectangle R = [0, 2] x [0, 4]. Use a Riemann sum with m = n = 2 and choose the sample points to be lower right corners. V=:Jx (b) Use the Midpoint Rule to estimate the volume in part (a). (c) Evaluate the double integral and compare your answer with the estimates in parts (a) and (b). (Round your answer to one decimal place.) Need Help? _' 3. [-/1 Points] DETAILS SESSCALC2 12.1.008. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER Evaluate the double integral by first identifying it as the volume of a solid. 1 1 (2 - x) dA, R =