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Mathematics 19 Online
OpenStudy (anonymous):

For a circle of radius 3 feet, find the arc length s subtended by a central angle of 57 degrees

OpenStudy (anonymous):

\[\Large s=r \theta\] s arc length r radius \[\Large \theta~=angle\]

OpenStudy (anonymous):

19/40

OpenStudy (anonymous):

you first have to conver the angle to rad how i showed you before

OpenStudy (anonymous):

i dont have a converter

OpenStudy (anonymous):

actually look here http://0.tqn.com/d/math/1/0/P/e/Length-of-Arc.gif

OpenStudy (anonymous):

is it 19/20

OpenStudy (anonymous):

Are you taking a test?

OpenStudy (anonymous):

so i do 57/360 times 2(3.14)3?

OpenStudy (anonymous):

and yes i am

OpenStudy (anonymous):

Yeah and what do you get, certainly larger than 1 (not 19/20)

OpenStudy (anonymous):

2.9829999999

OpenStudy (anonymous):

but all my answers on the test are fractions

OpenStudy (anonymous):

Ok so then jsut divide the fractions out and see which one matches

OpenStudy (anonymous):

one of them is 3.8?

OpenStudy (anonymous):

Well pick the answer the answer that gives you 2.982999 when you divide it out

OpenStudy (anonymous):

there is none they all equal sm else but there is a 3.8

OpenStudy (anonymous):

What are the answer options? Are there units?

OpenStudy (anonymous):

19/40....19/5.....19/20......or 19/10

OpenStudy (anonymous):

Well we've tried it with formula, I say just'go with 19/40

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