Do the area of the circle as a whole minus (72/360 x radius^2) and then minus the other grey area.
Answer is A.
√6 + √2
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4
Just do length x width x height
Answer:
B. 
Hope this helped. A brainliest would be very much appreciated. (I need 4 brainliest so I can level up) :)
Answer:
C 180-123
Step-by-step explanation:
This is because 180 is what triangles always equal and if one angle is 128 then the rest will be answered from this equation