The circumference of a circle is 2*PI*R. In this case, the radius is 29, pi is 3.14, and the 2. When you multiply those all together, you get 182.12
PB = 29m basically means that the length of PB is 29. Since we can see that line PB is the radius, we can us the formula for circumference C=2πr . Therefore, we use r (radius) = 29 and plug it into the question.
C = 2π(29)
C = 58π m
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