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rnadji rnadji
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12 years ago
The circle contains the central angle (30) and arc length (6). Is there a formula to solve this equation?
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#1
12 years ago
A complete circle is 360 degrees if the central angle is 30 then 360/30 = 12 of this angle ad therefore 12 of the arcs of length 6 so  circumference of circle is  72.
But circumference = 2.pi.r
so r =72/(2.pi)
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#2
12 years ago
So, an angle of 30 is 1/12 of a circle. So it's arc length is 1/12 of the circumference. Then C = 72
If C = 2pi*r = 72
r = 36/pi
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