What is the radius of a pipe with a 12-inch diameter?

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Multiple Choice

What is the radius of a pipe with a 12-inch diameter?

Explanation:
Radius is half the diameter. The radius is the distance from the center of the pipe to its edge, while the diameter is the full width across the pipe. So you divide the diameter by 2: 12 inches ÷ 2 = 6 inches. That 6 inches is the distance from the center to the outside. The other numbers come from mixing up the full width with the half-width, but the correct relationship is radius equals diameter divided by 2.

Radius is half the diameter. The radius is the distance from the center of the pipe to its edge, while the diameter is the full width across the pipe. So you divide the diameter by 2: 12 inches ÷ 2 = 6 inches. That 6 inches is the distance from the center to the outside. The other numbers come from mixing up the full width with the half-width, but the correct relationship is radius equals diameter divided by 2.

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