Posted by **Anonymous** on Thursday, May 21, 2009 at 3:42pm.

the radius of circle c is 16 units long. find the lenght of an arc that has a measure of 270. round to the nearest hundreth. i need to answer this question. i dont want the answer but i was wondering if someone could give me the formula i need to set this up.

- math -
**Reiny**, Thursday, May 21, 2009 at 7:48pm
did you mean the arc with a central angle of 270 degrees ?

if so, find the circumference which is 2pi(16)

then take 3/4 of that

since 270 degrees is 3/4 around the circle.

- math -
**Anonymous**, Thursday, May 21, 2009 at 8:26pm
thats exactly what i needed. thank you very much

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