Question

A solid whose based as S={(x,y)∣4x2+9y2≤36}. Cross section perpendicular to the base and x− axis are described as: Isosceles right triangles with hypotenuse as base.

Answer 1

The answer is that the cross sections of the solid perpendicular to the base and the x-axis are isosceles right triangles, with the hypotenuse of each triangle aligned along the elliptical base described by the inequality 4x^2 + 9y^2 ≤ 36.