Question

If a triangular cross-section with coordinates at (1, 1), (1, 4), and (3, 1) is rotated about the line x = 1, what will be the resulting three-dimensional object?

Cone
Cylinder
Sphere
Pyramid

Answer 1

So if this triangle was rotated around the purple line, what shape do you think it'll become

Answer 2

So it would be cone right

Answer 3

You sureee?

Answer 4

@AZ