import math
import time
name = raw_input("What is your name? ")
print "Hello " + name + "!"
# Calc circumference circle
print "Calculate the circumference of a circle given the radius"
z = 1
y = 0
while True:
    try:
        radius = int(raw_input("The radius of circle:"))
        print "The Circumference is:"
        print 2 * math.pi * radius
        break
    except:
        while z == 1:
            print "Insert a number"
            radius = input("The radius of circle:")
            if isinstance(radius, int) == True:
                print "The Circumference is:"
                print 2 * math.pi * radius
                break
                z + 1
            elif isinstance(radius, int) == False:
                print "Insert a number"
                radius = input("The radius of circle:")
                z = 1
#Calculate Area of circle
print "Calculate the area of a circle"

while True:
    try:
        radiussqrd = int(raw_input("The radius of circle:"))
        print "The area is: "
        print math.pi * math.pow(radiussqrd, 2)
        break
    except:
        print "Insert an integer"
        print "The area is: "
        print math.pi * math.pow(radiussqrd, 2)
        break
#Calculate oppervlakte cirkel
print "Calculate area of square"
a = input("Side of square:")
loopindex = 4
for loopindex in range(1, 4):
        time.sleep(1)
        print str(loopindex)+ "..."
print "The area of the Square is equal to:"
print math.pow(a, 2)
#Calculate Area Rectangle
print "Calculate the area of a rectangle"
length = input("Length of the rectangle:")
width = input("Width of the rectangle:")
loop = 4
for loop in range(1,4):
    time.sleep(1)
    print str(loop) + "..."
print "The area of the rectangle is equal to:"
print length * width