Although we round it to 24 hr, the actual length of a day is 23 hr, 56 min, and 4.2 sec. how many seconds are there in an actual day?

86,164.2 seconds

Step-by-step explanation:

There are 60 seconds in a minute, 60 minutes in an hour. Every hour has 3600 seconds. Multiply that by 23.

23*3600=82,800

multiply 60 by 56 for the seconds in the 56 minutes.

60*56=3360

add 82800+3360+4.2 = 86,164.2