To model a cylinder starting from a 2D rectangular profile, which 3D operation should the drafter use after drawing the rectangle (assuming an axis is defined for revolution)?

Introduction / Context:
Cylinders may be created in multiple ways. The most direct is extruding a circle. However, when starting with a rectangular cross-section arranged with one edge along an intended axis, revolving that rectangle 360 degrees produces a perfect right circular cylinder.

Given Data / Assumptions:

• A 2D rectangle has been drawn.
• One edge is intended to be the axis of revolution.
• The target shape is a right circular cylinder.

Concept / Approach:
Revolve rotates a 2D profile around a defined axis, generating a solid of revolution. A rectangle whose height equals the desired radius and whose length aligns on the axis will, upon 360-degree revolution, create a full cylinder. Sweep moves a profile along a path; extruding a rectangle would make a prismatic block, not a cylinder.

Step-by-Step Solution:

Verification / Alternative check:
Compare to a cylinder created by extruding a circle; diameter and height should match. Section the model to confirm circular cross-sections.

Why Other Options Are Wrong:

• Sweep: Would require a path and typically produces complex shapes; not necessary here.
• Extrude: Extruding a rectangle yields a rectangular prism, not a cylinder.
• none of the above: Revolve is valid and standard.

Common Pitfalls:
Using the wrong axis or a 180-degree revolve, which creates a half-cylinder. Ensure a full 360-degree angle is entered.

Final Answer:
Revolve