Question

kara rotates a square around its horizontal axis of symmetry to make a solid figure. which of the following could be the shape of a horizontal cross section of the solid figure?

triangle
square
circle
cylinder

Explanation:

Identify the solid of revolution

$$ \text{Square rotated around its horizontal axis of symmetry} ightarrow \text{Cylinder} $$

Determine the orientation of the cylinder

$$ \text{Rotation axis is horizontal} ightarrow \text{Cylinder's main axis is horizontal} $$

Analyze the horizontal cross section

$$ \text{Horizontal plane parallel to the horizontal axis} ightarrow \text{Rectangle (or square)} $$

Answer:

• triangle
• square (Correct answer)
• circle
• cylinder