282
Step-by-step explanation:
C=180-112=68
A=180-68-51=61
sum of exterior angles=112+119+51=282
Remember the arc is equal to the central angle, so ab will equal angle APB. they told you angle APB is a right angle, how many degrees is this? that is what ab will be also:)
Answer: 390
Step-by-step explanation:
Answer:
18
Step-by-step explanation:
10/0.5 = 20
20 * 0.9 = 18