Answer:
25/2
Step-by-step explanation:
The marked angles are supplementary, so ...
117 + (6x -12) = 180
6x = 75 . . . . . . . . . . . subtract 105
x = 25/2 . . . . . . . . . . divide by 6
Answer: 0
[24 - (15 + 2) +3] -9
[24-(17) +3] -9
[7 +3] -9
9 - 9 = 0
84.6 km2 is the answer
