The circumference of a circle with a diameter of 2 units is ________.
A
π units
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B
2π units
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C
4π units
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D
8π units
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Solution
The correct option is B 2π units Circumference of a circle=2π×radius But, 2×radius=diameter ⟹Circumference=π×diameter Since diameter is 2 units, we have circumference to be 2π units.