Question

Which of the following is true about the diameter of a sphere?
• The diameter is 2.5 times the length of the radius.
• The diameter is the shortest length on a sphere.
• The diameter is not a chord.
• The diameter of a sphere passes through the center of the circle.

Answer 1

Only the last statement is true (with a small wording fix). Correct facts:

- "The diameter is 2.5 times the length of the radius." — False. Diameter = 2 × radius.
- "The diameter is the shortest length on a sphere." — False. A diameter is the longest straight-line chord through the sphere (not a shortest path on the surface).
- "The diameter is not a chord." — False. A diameter is a special chord that passes through the center.
- "The diameter of a sphere passes through the center of the circle." — True if you mean "center of the sphere." A diameter always passes through the sphere’s center.