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OpenStudy (anonymous):
What is the radius of a circle in which a 30° arc is 2 inches long?
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OpenStudy (saifoo.khan):
s = r * theta
OpenStudy (anonymous):
its 2 pi inches long not 2 inches
OpenStudy (anonymous):
360/30*2 = 24 = circumference of the circle 24/2*pi = 3.819718634 inches = radius of the circle
OpenStudy (saifoo.khan):
s = arc length
OpenStudy (anonymous):
whats theta?
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OpenStudy (saifoo.khan):
angle.
OpenStudy (saifoo.khan):
in radians.
OpenStudy (anonymous):
oh okay! thank yall
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