Civil Service Exam Reviewer · Measurement and Geometry · hard
A circle has an area of 452.16 m². What is its circumference? (π = 3.14)
- 75.36 m
- 37.68 m
- 226.08 m
- 150.72 m
Answer
A. 75.36 m
Solution
r² = 452.16 ÷ 3.14 = 144 → r = 12. C = 2πr = 75.36 m.
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