13. 72 + 72 + X = 180
X = 180 - 144
X = 36
angle A= 36
14. X + X + 101 = 180
X+X =180-101
X+X= 79 divided by 2
X= 39.5
angle B= 39.5
Plz mark as brainleast plzzz
Answer:

Step-by-step explanation:
Given function that shows the area of the opening,

If 
Hence, the area of the opening would be,






Answer:
I think it might be A or even C sorry if you get it wrong I don't remember what I answered to this test
The regular answer is 12 so try 10
Hope this helps. Mark brainlist.?