# math

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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 don't want the answer but i was wondering if someone could give me the formula i need to set this up.

• math -

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 -

thats exactly what i needed. thank you very much

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