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I have posted a link there to this thread so the OP can view my work.I need calculus math help?

Find the volume V of the described solid S.

The base of S is an elliptical region with boundary curve 16x^2 + 25y^2 = 400. Cross-sections perpendicular to the x-axis are isosceles right triangles with hypotenuse in the base.

Find the volume V of the described solid S.

The base of S is the region enclosed by the parabola

y = 3 - 2x^2

and the x−axis. Cross-sections perpendicular to the y−axis are squares.

edit: This question has since been deleted at Yahoo! Answers.