Question

{PLEASE}Triangle ABC with the given measurements is rotated in space about side AB. Which answer gives the solid formed and its surface area?

Answer 1

First we've got to do some imagining. If we rotate the triangle about AB, what's the 3D shape?

A cone!
The answered are narrowed to A and C.

A cone has two surfaces, a circle at the bottom, and the curved surface like a party hat.

Since there should be two areas added together, which answer do you think it is; A or C?

(You can comment answer and I'll check with you)

Answer 2

Answer:

The answer is A