Civil Service Exam Reviewer · Measurement and Geometry · hard
A circle has an area of 379.94 m². What is its circumference? (π = 3.14)
- 34.54 m
- 189.97 m
- 138.16 m
- 69.08 m
Answer
D. 69.08 m
Solution
r² = 379.94 ÷ 3.14 = 121 → r = 11. C = 2πr = 69.08 m.
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