A dollar bill is 15.6 cm long. If you have 200 dollar bills laid end to end, you can find the total length by multiplying the length of one bill by the number of bills.
So, the calculation would be:
Length of one dollar bill = 15.6 cm
Number of dollar bills = 200
Total Length = 15.6 cm × 200 = 3120 cm
Now, to convert centimeters to meters, you divide by 100 (since 1 meter = 100 cm):
Total Length in meters = 3120 cm ÷ 100 = 31.2 m
Therefore, if you laid 200 dollar bills end to end, the line would be 31.2 meters long.