Answer:
The longer rope is 31.9882ft long or 975cm.
The shorter rope is 31.0039ft long or 945cm.
Explanation:
Convert 63ft to cm, which is 1920cm.
Divide 1920cm by 2. Which give 960cm. So if both sides were cut equally this would be the length but one is 15cm longer.
So we add 15cm to 960 cm, which is 975cm, thus thats the length for the longer rope.
To find the shorter one we just subtract 15cm from 960cm and we get 945cm.
Convert both final measurements back to ft if required.