Engineering Board Exam Reviewer · Circles: Arcs and Angles · easy
Find the length of an arc of a circle of radius 8 cm that subtends a central angle of 45°.
- π 3.14
- 4 π 12.57
- 2 π 6.28
- 8 π 25.13
Answer
C. 2 π 6.28
Solution
s=r =8·π/4=2π 6.28 cm.
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