3 years ago

An arc of a circle is 3πm long, and it subtends an angle of 72° at the center of the circle. Find the radius of the circle.

Mathematics

1 answer:

Alex777 [14]3 years ago

8 0

72⁰_______3π m
360⁰______15π m

C = 15π = 2π r
r = 7•5 m

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