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# Step 1: prompt for a radius
# Step 2: apply the area formula
# Step 3: print out the results

import math

radiusString = raw_input('Enter the radius of your choice: ');
radiusInteger = int(radiusString)

circumference = 2 * math.pi * radiusInteger
area = math.pi * (radiusInteger ** 2)

print "The circumference is: ", circumference, \
 ", and the area is: ", area