Answer:
2 058 000 cm/min
Explanation:
100 cm / m and 60 s/min
Try using only the units :
m/s * cm/m * s/min = cm/min
( see how the 'm' and the 's' cancel out and you are left with cm/min ?)
to convert using numbers, just add them in:
343 m/s * 100 cm/m * 60 s / min =2058000 cm/min
