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As per your syllabus, what is the circumference of a circle of diameter d expressed in terms of π?

Aπd
Bπd²
C2πd
Dπd/2
Answer & Solution
Correct answer: A. πd
Circumference = πd (or equivalently 2πr where r=d/2). The other formulas conflate circumference with area or other quantities.
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