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Mathematics 8 Online
OpenStudy (anonymous):

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

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?

OpenStudy (saifoo.khan):

angle.

OpenStudy (saifoo.khan):

in radians.

OpenStudy (anonymous):

oh okay! thank yall

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