Remember the circle eq'n C = pi*d Algebraically rearranging d = C / pi Hence d = 52 pi / pi Cancel down by 'pi' Hence d = 52.
pi is not divided into anything - unless you specify pi/2 or pi/3.6
2
5
52 divided 11 = 4.7272727272727275
Pi divided by thirty two. .0981747704
0.8387
11.5385
17.3333
208.6848
52
78