What is the diameter of a circle with radius 7?

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Multiple Choice

What is the diameter of a circle with radius 7?

Explanation:
The diameter is twice the radius because it runs from one edge of the circle to the opposite edge, passing through the center, while the radius is only a line from the center to the edge. So with a radius of 7, the diameter is 2 × 7 = 14. The other numbers don’t fit because they’re different multiples of the radius: 7 is the radius itself, 21 is three times the radius, and 28 is four times the radius.

The diameter is twice the radius because it runs from one edge of the circle to the opposite edge, passing through the center, while the radius is only a line from the center to the edge. So with a radius of 7, the diameter is 2 × 7 = 14.

The other numbers don’t fit because they’re different multiples of the radius: 7 is the radius itself, 21 is three times the radius, and 28 is four times the radius.

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