Difficulty: Easy
Correct Answer: Correct
Explanation:
Introduction / Context:Creating holes in 3D solids is a foundational CAD task. One of the most common workflows uses Boolean operations: Union, Subtract, and Intersect. This question checks whether you recognize that subtracting a cylindrical solid from a prismatic solid yields a cylindrical void (hole).
Given Data / Assumptions:
Concept / Approach:Boolean subtract removes the volume of one solid from another. If a solid cylinder passes through a solid box, subtracting the cylinder from the box creates a through-hole matching the cylinder's diameter and path.
Step-by-Step Solution:
Step 1: Create a solid box with BOX.Step 2: Create a solid cylinder with CYLINDER (set radius and height).Step 3: Position the cylinder so it passes through the box where the hole is needed.Step 4: Use SUBTRACT: select the box first (object to keep), then select the cylinder (object to remove).Step 5: Result is a clean cylindrical void (through-hole) in the box.Verification / Alternative check:Inspect section views or use visual styles to confirm the cylindrical void. Volume/mass properties reflect removed material.
Why Other Options Are Wrong:“Incorrect” contradicts standard solid modeling practice. “Only if the cylinder is a surface” is wrong: subtraction requires solids for solid-solid Boolean. Visual style and projection choices do not govern Boolean validity.
Common Pitfalls:Using a surface (not a solid) for subtraction; selecting operands in wrong order; failing to ensure full intersection through the target solid.
Final Answer:Correct
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