please indicate with option is correct in each problem with a clear explanation, thanks..

The volume of a solid can often be deter- mined by integration even when the cross- 1. volume = (1+y?) dy cu.units section of the solid is not necessarily a circle. In the following figure 2. volume = 4(1 + y?) dy cu.units 2 3. volume = 2(1 - y?) dy cu.units 4. volume = ,4(1 -y?) dy cu.units y 5. volume = [, (1-y?) dy cu.units the base is the circle x2 + y' = 1 and the cross-section perpendicular to the y- axis is a square. Set up a definite integral expressing the volume, V, of the solid.