7 hours and 6 minutes
It takes approximately 6.11 hours (6 hours 7 minutes) to drive 428 miles at an average speed of 70 mph.
That cannot be answered without knowing your speed over that distance.
230 / 70 = 3.285 714 285 7... 60 x 0.2857142857 = 17.142 857 142... 60 x 0.142857142= 8.571 428 52... It would take 3 hours 17 minutes and approximately 9 seconds to drive 230 miles at a speed of 70 miles/hour
428 miles = 688.8 km
428 km = 265,946 9 miles
Assuming, 30 mph is a constant or average speed, you can use the equation:Speed = Distance / TimeSolve for Time:Speed = Distance / TimeTime = Distance / SpeedPlug in your numbers:t = 428 miles / ( 30 miles / hour )miles cancel out, and leave hourst = 428/30 hours leaving you with about 14.2667 hoursIf you want time to be in hours and minutes:14.2667 - 14 = 0.2667 hours (remove the 14 hours, we'll add it at the end)0.2667 hours x ( 60 minutes / 1 hour ) = .2667 x 60 minutes = about 16 minutesThe answer is about 14 hours and 16 minutes
0.081 miles.
428 square miles is approximately 1107 square kilometers.
428 miles
1 knot = 1 nautocal mile per hour. So 428 nm @ 20 knots per hour will take 428/20 = 21.4 hours. After 12 hours, it is 20*12 = 240 nautical miles away. Its distance East is 240*cos(1.4deg) = 239.9 nautical miles and its distance South is 240*sin(1.4deg) = 5.9 nautical miles.
It is 428 mm long.