Geometry and Trigonometry practice question

Answer: A. 14π

C = 2πr = 2π(7) = 14π.

Why the other answers are wrong

B. 7π

7π uses πr, forgetting the 2.

C. 49π

49π is the AREA (πr²).

D. 14

14 is the diameter; the circumference is π times that.

More Geometry and Trigonometry questions

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