Answer :
The length of the shorter rope is 0.792cm and the length of the longer rope is 1.188cm.
What are percentages?
Percentage can be described as a fraction out of an amount that is usually expressed as a number out of hundred. The sign used to represent percentages is %.
What are the lengths of the ropes?
20% of 1.98cm = 0.2 x 1.98 = 0.396cm
Length of the shorter rope = (1.98 - 0.396) / 2 = 0.792cm
Length of the longer rope = 0.396 + 0.792 = 1.188cm
To learn more about percentages, please check: https://brainly.com/question/25764815