Answer:
I belive it should be # 3 i might be wrong thow.
Step-by-step explanation:
Answer:
12.496
Step-by-step explanation:

One of the missing angles is 45degrees 64+71=135 then subtract from 180 since it is a triangle. Then 64 are vertical angles with the one across from it which stays the same. The last angle would be 64+56=120 and 180-120=60 which would be the last angle. Hope this Helps... Juan
After you measured it you can check if the measurement is correct by knowing radius and arc length using formula,
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Hope this helps.
V=Bh so you would do 25.4 x 17 which equals 431.8