#waap to perfom read radius and find area and  circum

rad= float(input("enter radius "))

a1 =3.14159 * rad ** 2
c1 =2 * 3.14159 * rad

print("a1 = ",a1)
print("c1 = ",c1)
print("a1 =%.2f c1 = %.2f " %(a1,c1))