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3 years ago

PUDICII

Mathematics

1 answer:

katrin2010 [14]3 years ago

8 0

Answer:

The arc measure of BC is 64

Step-by-step explanation:

1. Calculate the full circumference of the circle

C=2pir

=2pi(18)

=36pi

2. Figure out the arc measure

arc length/circumference=arc measure/degrees in a circle

14pi/36pi=arc measure/360 (solve for arc measure)

14pi/36pi *360=140

The measures of BC and CA add up to the measure of BA

mBC +76=140

BC=64

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