I have two circles that are congruent to each other one has a lenght of 8ft and the second is half of 8ft. What is the length of the second circle

Answer 1

Your question makes no sense.

To me congruent circles would be circles that have the same radius.

What do you mean by "one has a lenght of 8ft"
Is that supposed to be the circumference ?
If the second has a "length" of 4 ft, then it must be smaller, therefore they can't be "congruent"