If you're using a 25-yard pool, then 400 yards is 16 laps. (400/25=16) Hope this helps! :)
In a 25 meter long pool it's 16 laps and in a 50 meter pool it's 8 laps
The length of an Olympic pool is 50 meters. One lap is 100 meters so 400 meters would equal 4 laps.
pensylvania
Two: Alaska and Hawaii. The other 48 are tied.there is 50 states in the untied states