# Can someone help?

in a circle M with m angle LMN=120 and LM=15 units. find the arc length of LN. Round to the nearest hundredth.

### 1 Answer

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- MichaelLv 71 month agoFavorite Answer
Method I - work it through

Circumference

c = 2πr

c = 2π(15)

c = 94.2477796077

arc length

s = (120/360)(94.2477796077)

s = 31.4159265359

s = 31.42 <–––––

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Method II - use the formula

s = (ø/180)πr

s = (120/180)π(15)

s = 31.4159265359

s = 31.42 <–––––

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