Which operation would you use to create a solid of revolution from a profile?

Which operation would you use to create a solid of revolution from a profile?

• A. Sweep
• B. Loft
• C. Fillet
• D. Revolve

Answer: (D)

Forming a solid of revolution comes from taking a two-dimensional profile and spinning it around an axis to generate a symmetrical three-dimensional shape. The operation that does this is revolve. By rotating the profile, every point traces a circle around the axis, creating the solid. A classic example is revolving a semicircle about its diameter to produce a sphere. If the profile is a straight line at a fixed distance from the axis, you get a cylinder, while other profiles can yield cones or more complex rotational bodies. The other operations serve different purposes: sweep moves a profile along a path to make a long shape; loft connects multiple profiles into a smooth form; fillet rounds sharp edges.

Forming a solid of revolution comes from taking a two-dimensional profile and spinning it around an axis to generate a symmetrical three-dimensional shape. The operation that does this is revolve. By rotating the profile, every point traces a circle around the axis, creating the solid. A classic example is revolving a semicircle about its diameter to produce a sphere. If the profile is a straight line at a fixed distance from the axis, you get a cylinder, while other profiles can yield cones or more complex rotational bodies. The other operations serve different purposes: sweep moves a profile along a path to make a long shape; loft connects multiple profiles into a smooth form; fillet rounds sharp edges.