The answer is 864,744.75 cm
The sum of all exterior angles is always 360 degrees.
360/40=9 sides
the polygon has 9 sides.
Semi --> twice
semimonthly --> occuring twice a month
Thus:
You are paid twice a month
12 months in a year
12 x 2 = 24 paychecks an year
Each pencil weighs 4 grams so the answer is B: 4