find the length of rope of a circle of 20 cm of radius subtended by a central angle of 150 º?
rope: segment connecting two points of a circle
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rope: segment connecting two points of a circle
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thank Romero Lazzare
I do not understand the English language, so sorry about not understand the point
if it means looking long radius r
20/2πr = 150°/360°
10/πr = 5/12
πr = 120/5
r = 120/5π
r = 24/π
or
r = 24/(22/7) = 168/22
r = 7.64