Question

If a right triangle was rotated about the y-axis, like the one shown below, what would be the resulting three-dimensional shape? cone cylinder pyramid sphere

Answer 1

A cone would be formed

Answer 2

Answer:

If a right triangle is rotated about the y-axis, then the resulting three-dimensional shape will be a cone.

Step-by-step explanation:

When a right traingle ABC rotated at its y-axis about 360°, then it forms a cone.

Length AB becomes the height (h) of the cone.

Length BC (base of the triangle) becomes the radius of the cone.

Length AC becomes the slant height.

Volume of a cone is given by  $\pi * r^{2} * h / 3$