How many centimeters are in 2.50 meters? how many kilometers are in 2.50 meters

For question 1= 1 cm = 100 m
                            ?     = 2.50 m
then cross multiply = 1 cm ×2.50 m/100 m
                                 = 5 cm/ 2
                                   =2.5 cm
so the answer is there are 2.5 cm in 2.50 m
 for question 2= 1 km = 1000 m
                                  ?=2.50 m
then cross mutiply= 1 km × 2.5 m/ 1000 km
                                 0.0025 km
so the answer is there is 0.0025 km in 2.50 m 
 hope i helped

the answer would be c ≈ 18.852*3.14= 6.286.28*3=18.85