anonymous
  • anonymous
an arc of length 12 meters is formed by a central angle A on a circle of r=9 the measure of A in degrees(2 decimal places() is a. 42.97 b. 8.38 c. 76.39 d. 1.30
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
b maybe?
anonymous
  • anonymous
\[s = r \theta\] Solve for theta. \[\theta = s/r\] \[\theta = 1.3333\] So your answer is D
anonymous
  • anonymous
it was c

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anonymous
  • anonymous
First, find the circumference of the circle. Then, find the ratio of arc to circumference. Then, use this ratio against 360 degrees to find the angle A.
anonymous
  • anonymous
circumference of circle = 2*p1*9 = 18 pi required angle = 12* 360 ------- 18 pi = 240 / pi = 76.39 degrees

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