Raymond is correct. Just add the formula of changing Degrees to Radians in the first step:
D / 180 = Rad / pi
120 / 180 = Rad / pi Cross multiply and reduce:
Rad = 120 pi / 180 = 2 pi / 3
2 Answers By Expert Tutors
Raymond B. answered • 04/21/21
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arc length = radius times radians
angle = 360-240 = 120 = 2pi/3
arc length = 9 times 2pi/3 = 6pi = about 18.85 yards
Area = pi(r)^2/3 = pi(9)^2/3 = 81 pi/3 = 27pi = about 254.5/3 = 84.8 square yards
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