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How do you get B? If it helps- the answer key says it’s 10.8 but I don’t know how I’m supposed to get there

How do you get B If it helps the answer key says its 108 but I dont know how Im supposed to get there class=

Respuesta :

One full arc is 360°

Since AB≡ PQ
⇒ 6a = 132

The sum of all the numbers around the circle should add up to 360°:
132 + 132 + 42 + 5b = 360

306 + 5b = 360

5b = 360 - 306

5b = 54

b = 54 ÷ 5

b = 10.8

Answer: b = 10.8


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