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What is the radius of a circle in which a 30° arc is 2 pi inches long?

24 inches
12 inches
2 to the square root of 3 inches

What is the radius of a circle in which a 30° arc is 2 pi inches long? 24 inches 12 inches-example-1
User Adrian Ng
by
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2 Answers

1 vote
the answer is 12 inches
User Thinkdeep
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6 votes
A = C/12 = 2pi r/ 12 = pi r/6 = 2pi
Cancel out pi and you get
r/6 =2 → r=12

Answer: B) 12 inches
User OjM
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