#Write a Python program that calculates the perimeter and area of the 
#rectangle, and the area of the circle. Ask user to enter length and width  
#of rectangle, and ask user to enter radius of the circle. 
#Use the following formulas: area = width * length  perimeter= 2*length + 
#2*width areaCircle = 3.14 * radius * radius 

#Discussion:
#Input: length, width, radius - all floats
#Output: area, perimetere, areaCircle - all floats
#Input Limitation: all inputs must be positive
#Calculations: area = width * length,perimeter= 2*length +
#2*width areaCircle = 3.14 * radius * radius=3.14*radius**2

#Part 1: Input

length=float(input("enter length "))
width=float(input("enter width "))
radius=float(input("enter radius "))

#Part 2: Calculations
area = width * length
perimeter= 2*length + 2*width
areaCircle = 3.14 * radius * radius

#different way to calculate using power operator **
areaCircle1 = 3.14 * radius**2 

#Part 3: Output

print("the area of rectangle is", area)
print("the perimeter of rectangle is", perimeter)
print("the area of the circle is", areaCircle, areaCircle1)