If the circle has radius 5, what is the diameter?

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Multiple Choice

If the circle has radius 5, what is the diameter?

Explanation:
Diameter is the distance across a circle through its center, and it is twice the radius. With a radius of 5, the diameter is 2 × 5 = 10. The radius reaches from the center to the edge, so doubling that length spans from one edge to the opposite edge. The other numbers don’t follow this relationship: 5 is the radius, not the full span; 15 and 20 are multiples that don’t reflect the twice-radius rule.

Diameter is the distance across a circle through its center, and it is twice the radius. With a radius of 5, the diameter is 2 × 5 = 10. The radius reaches from the center to the edge, so doubling that length spans from one edge to the opposite edge. The other numbers don’t follow this relationship: 5 is the radius, not the full span; 15 and 20 are multiples that don’t reflect the twice-radius rule.

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