Question

if a semi - circle is rotated about the y - axis as shown below, what three - dimensional figure would be formed? pyramid cylinder cone sphere

Explanation:

Step1: Recall 3 - D shape formation

When a semi - circle is rotated about its diameter (in this case, the y - axis), it forms a three - dimensional shape.

Step2: Identify the 3 - D shape

Based on the rotation of a semi - circle about its diameter, the resulting three - dimensional shape is a sphere.

Answer:

Sphere