Read, analyze, and solve the prob

1. Mr. Edgardo Cruz bought two round wall clocks. The blue wall clock has a circumference of 53.38 cm while the brown wall clock has a circumference of 65.94 cm. How much longer is the diameter of one wall clock than the other?​

report:
Nonsense
rude and not helpful.

brainlist:
complete answer
with solution.​