Answer: 1,825 km above the surface
Step-by-step explanation:
Find out the number of minutes in 9 hours:
= 9 * 60 mins
= 540 mins
The space craft is descending at 5km per minute. In 540 minutes it would have descended:
= 540 * 5
= 2,700 km
Its new position would be:
= Old position - Change in position
= 4,525 - 2,700
= 1,825 km above the surface
