What is the measure of arc RC?
Question options
30°
60°
90°
120°
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What is the length of Arc AB, if the radius of Circle L is 12 inches?
(not degrees)
Question options:
24.07 inches
724.5 inches
75.36 inches
3.14 inches
Since the lines are all the same length, the angles are all the same measure. The three angles equally divide the entire 360 degree circle. 1/3 of 360 degrees is 120 degrees.
2
The circumference of a circle is given by pi d where diameter = 2r = 24
115 degrees is a fraction of the 360 degrees of a complete circle.....this fraction is 115/360 ...so the arc length will be
(115/360) * pi * 24 = 24.07 inches