4 lengths
400 km = 4*1014 nm
4 kilometer
1 km = 1000 metres and 1 metre = 100 cm so 1 km = 105 cm So 400 km = 4*107 cm.
No: 7km = 7000m
.4 km
400 m =0.4 km
Depends how big your pool is, doesn't it? A 25-yard pool would make you do 4 lengths (one-way across) per 100 yds, which is 16 lengths for 400 yds.
around 400 Km / 3-4 hours
i dont know, but if you are driving at 100 km/hr it takes 4 hours :)
1 Lap is 400 meters. 4km is equal to 4000m. 4000÷400=10 so 10 laps would equal 4 Km.
14 tens is 140 4 hundreds is 400 The difference is 260.