Answer:
616.6 square cm
Step-by-step explanation:
Area of a regular octagon

To the nearest
0.1: 643
1: 643
10: 640
100: 600
1,000: 1,000
Those are the answers to the nearest tenth, one, ten, hundred and thousand.
x greater than negative 2, because ln(x) is undefined for x <= 0 (-2+2=0, -1.999...+2>0)
3x - 14 = 2x + 25
+14 +14
3x = 2x + 39
-2x -2x
x= 39
therefore x is 39. If you want to find the exact angel, just substitute 39 into x, solve for it and it should give you the exact angel.
Hope I helped :)