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Find the radius of a circle with the arc length of 69 cm and a central angle measure of 81°

User Eric Shieh
by
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1 Answer

3 votes

convert 81°into radian

81°=(81×pie/180)=9pie/20 pie=22/7

now,

radius=arc length/θ in radian

then 69/(9pie/20)

=48.79

User Altenrion
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6.5k points