Question

what solid 3d object is produced by rotating the semicircle 360° about line m? choose 1 answer: a a sphere with radius 5 units b a sphere with diameter 5 units c a hemisphere with radius 5 units d a hemisphere with diameter 5 units what is a hemisphere?

Explanation:

When a semicircle is rotated 360° about its diameter (line \( m \) here, which is the diameter of the semicircle with radius 5), the resulting 3D shape is a sphere. The radius of the sphere is equal to the radius of the semicircle, which is 5 units. Option B is incorrect as the diameter would be 10 (since radius is 5), and options C and D are incorrect because rotating a semicircle 360° gives a full sphere, not a hemisphere.

Answer:

A. A sphere with radius 5 units