67. The base of S is an elliptical region with boundary curve 9x² + 4y² = 36. Cross-sections perpendicular to the z-axis
Posted: Mon Jul 11, 2022 11:13 am
67. The base of S is an elliptical region with boundary curve 9x² + 4y² = 36. Cross-sections perpendicular to the z-axis are isosceles right triangles with hypotenuse in the base. Answer 24