Question

change into sec ( 3hr and 21min) full process​

Answer 1

Answer:

OK dear here is ur ans

Step-by-step explanation:

1 hr=60 mins

1 min=60sec

so to convert 1 hr into sec we need to multiply

so if 1 min=60 sec

       60mins (1hr) =60 sec * 60 sec

                                     3600 sec

           hence 1hr = 3600 sec

3hr =10800

        now we will convert mins to sec

    to convert mins to sec

                      1min=60 sec

         so 21 mins=60*21

                       = 1260sec

3hr=3600 sec

21 mins = 1260 sec

given value = 3hr 21 mins

                    10800sec + 1260 sec

               12060sec

may it help u

have a nice day

  # be brainly

#brainliest

           

Answer 2

$\Large{\underline{\underline{\textsf{\maltese\: {\red{Required Answer :-}}}}}}$

We need to change 3 hours and 21 minutes to seconds.

Let's start :)

➪ 1 minute = 60 seconds

➪ 1 hour = 60 minutes

➪ 60 minutes = 60 × 60 seconds

➪ 60 minutes = 3600 seconds

➪ 1 hour = 3600 seconds

⎈ Let's first change 3hours to seconds.

1 hour = 3600 seconds

➪ 3 hours = 3 × 3600 seconds

➪ 3 hours = 10800 seconds

⎈ Now let's change 21 minutes to seconds.

1 minute = 60 seconds

➪ 21 minutes = 21 × 60 seconds

➪ 21 minutes = 1260 seconds

3 hours + 21 seconds

= 10800 seconds + 1260 seconds

= 12,060 seconds

∴ 3 hours and 21 minutes = 12,060 seconds