Question 143205
Use the same unit multiplier as the other problem you asked about

100cm = 1 m  --> 100cm/m

25m =
25m * 100cm/m = 
2500 cm

it is the same with miles and feet (5280ft/mile)
same concept as inches per foot (12in/ft) - it is the units that make the ratio equal to "1" -- hence a unit multiplier