Question

What solid 3D object is produced by rotating the rectangle about line m?

Answer 1

A. A cylinder with diameter 8 units

Explanation:

∵ The line m is the central axis

So the radius is 4 units. ∴ Diameter is 8 units.

∵ The picture is a rectangle.

[ The rectangle rotates are its side to form a cylinder ]

So a cylinder with diameter 8 units.

The answer is A.