42 miles 11 feet
The answer will depend on whether the length is 42 inches, 42 feet or even 42 miles!
42 miles = 221760 feet 3 hours = 10800 seconds 42 miles in 3 hours = 221760/10800 = 20.533 feet pe second
42
42mph equates to 61.6 feet per second.
42 square feet
126 feet.42 yards is 126 feet.
42 feet = 12.8016 meters
42 inches = 3.5 feet.
42 mph = 61.6 fps100/61.6 = 1.62338 seconds (rounded)
42 miles=67.592448 kilometers
42 kilometers = 26.0975901 miles