Answer: 2. Linear pair postulate
4. 60 + mACB=180
5. mACB=120
6. definition of obtuse angle
Volume prism= ½•a•c•h
=½•7•11•5
=½•385
=192.5cm³
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Answer:314
Step-by-step explanation: To find area you use the formula πr^2. Your radius is 10 (since it is half your diameter). Plug it in to get π(10)^2. or 100π. Then just substitute 3.14 for π. You have 100 times 3.14 which equals 314
The answer is obviously the second one B or number two
