Asked by abdullahi bello

If a radius of circle 9cm angle at center 105°what are length of arc and perimeter of actor

Answers

Answered by oobleck
I assume you mean perimeter of sector (not actor!)
105° = 7π/12
arc length s = rθ = 9 * 7π/12 = 21π/4
perimeter p = 2r+s = 18 + 21π/4
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