To convert 21 minutes to hours, we have to calculate equivalent hours for 21 minutes.
To change 21 minutes into its equivalent number of hours, we need to calculate the total hours of the 21 minutes by performing division by the constant 60 minutes per hour.
To calculate the resultant hours we will use the following standard time formula.
60 minutes = 1 Hour
⇒1 minute = 1/60 hours
⇒21 minutes = 1/60 hours X 21
⇒ 21 minutes = (21 / 60 ) hours
⇒ 21 x 1/60 hours = 0.35 hours [as 1 hour = 60 minutes]
Therefore the number of hours = 0.35
Hence, after converting 21 in hours as calculated above, we can conclude that
21 minutes ≈ 0.350 hour
Therefore the final result for the query 21 minutes to hours is equivalent to 0.350 hour. (approximately)