Subtract. 7h 15min 12s--2h 3min 46s= if you do this u get 18 points

5 hrs    11 min   26 seconds

Step-by-step explanation:

7 hrs  15  min  12 s

-2 hrs  3 mins 46  s

start on the right

we need to borrow from the minutes since we need more seconds

1 minute = 60 seconds  

15-1 = 14 minutes

12+60 = 72seconds

now every number on the top line is bigger than on the bottom line so we can subtract

7 hrs  14  min  72 s

-2 hrs  3 mins 46  s

5 hrs    11 min   26 seconds

what is the original number? you forgot to add it.

v = 1/3 a^2h

step-by-step explanation:

if the height is 57.7cm and the height of the slant edge is 18.2cm, then the volume is 1/3 a^2h.