why does it appear can't multiply sequence by non-int of type 'str' ? I think I already give the width and height an integer velue. Thanks
<pre><code># This is a calcualtor

shape = raw_input('what shape do you want to calculate? rectangle, circle, triangle, square? ')

if shape == 'rectangle':

    width = raw_input('Please tell me the width of rectangle: ')
    height = raw_input('Please tell me the height of rectangle: ')
    print 'the area of the rectange is: ', width*height

elif shape == 'circle':
    radius = raw_input('Please tell me the radius of the circle: ')
    print 'the area of the circle is: ', 3.14 * int(radius)**2
</code></pre>