The chord ST of a circle is equal to the radius r of the ...
The chord ST of a circle is equal to the radius r of the circle. Find the length of arc ST
πr3
πr2
πr12
πr6
Correct answer is A
r2r Sin θ = 12
θ = sin−1 (12) = 30o = 60o
Length of arc (minor)
ST = θ360 x 2πr
60360×2π×r=π3
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