If d = 20 and C = 20π
If d = 26 and C = 26π
If r = 12 and C = π
If r = 18 and C = 14π
If r = 6 and C = 12π
If r = 50 and C = 100π

^Matches w
then d = 1
then d = 100
then d = 12
then d = 14
then r = 10
then r = 13

What goes w what!