Distance = SPEED × TIME
Note:
The unit of given data should be in same units . if it's not , then convert it!
Time = 3 hrs and 30minutes .
1 hr = 60 minutes
(applying Direct proportion)
3hrs = 60×3 = 180 minutes .
Time = 180 minutes + 30minutes
= 210 × 60
= 126000
Distance travelled = 66m/s × 126000
= 831000 m/s