For date-time calculation these three conversions come in handy:
86400 seconds = 1 day
1440 minutes = 1 day
30 million seconds = 1 year
For length calculation
30 cm = 1 ft
40 inch = 1 meter
Error is around 2% in these cases.
For date-time calculation these three conversions come in handy:
86400 seconds = 1 day
1440 minutes = 1 day
30 million seconds = 1 year
For length calculation
30 cm = 1 ft
40 inch = 1 meter
Error is around 2% in these cases.