[28] Rectangle's Circumscribed Circle

import math

print("Enter the side lengths of the rectangle.")
a = float(input("a = "))
b = float(input("b = "))
radius = float(input("Enter the radius of the circle: "))

diagonal = math.sqrt(a ** 2 + b ** 2) / 2

if diagonal == radius:
    print("The circle can be circumscribed around the rectangle.")
else:
    print("The circle cannot be circumscribed around the rectangle.")