A kilometre is a unit of distance. Feet per second is a unit of speed. The two units are therefore incompatible.
350 kilometers = 1,148,293.96 feet.
350 feet per second = 238.64 mph
350 mph = 513.3 feet per second.
350 mph is 513.3 feet per second.
350 kilometers = 35,000,000 centimeters
350 kilometers=217.479917 miles
21 350 what? If it's 21 350 meters, that equals 21.35 kilometers.
The prefix "kilo" means 1000. To convert from meters to kilometers, just divide by 1000.
350 feet = 116.666667 yards
350 metres = 1,148.3 feet
350 kilometers=217.479917 miles
350' by 150' is 1.2 acres.