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.

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  1. 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.

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  2. thats exactly what i needed. thank you very much

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