#Question 8
pi= 3.14
r= input("enter the radius here ")
r=float(r)
A= pi*r**2
print("Area of a cicle",A)

#Question 10
miles_driven = input("the number of miles driven ")
miles_driven = float(miles_driven)
gallons_used = input("the number of gallons used ")
gallons_used = int(gallons_used)
MPG = miles_driven / gallons_used
print("MPG for a car is ", MPG)

#Question 12
F= input("Type degree Fahrenheit here ")
F= float(F)
V= 32
Z= 1.8
C= (F-V)// Z
print("Degree Celsius is ", C)