Question

What is the perimeter of a square with side length 5 4/5? As a mixed number.

Answer 1

29/5+29/5+29/5+29/5= 23 1/5

Answer 2

The perimeter of a square is P = 4(side length).  Here, P = 4(5 4/5), or
P = 4(29/5).  This is the same as P = 116/5.  You can reduce that to a mixed number by dividing 5 into 116:  P = 23 1/5.