Martina turns on a treadmill to start walking. She takes 1 minute to gradually increase her speed and then walks at the same speed for 4 minutes. She increases her speed twice more during the 15 minutes she is on a treadmill

i believe it is 0.1m because the measurement of 30.4m limits how precise you can be

you can only be as precise as the least precise measurement

"exterior angles = 360 / number of sides.

60 = 360 / sides

sides = 360 / 60

sides = 6"