<reponame>nikolayvutov/Python<gh_stars>0
import math, sys

r = float(input('r = '))
area = math.pi * r * r
perimeter = 2 * math.pi * r
print('Area = ', area)
print('Perimeter = ', perimeter)
import math, sys

r = float(input('r = '))
area = math.pi * r * r
perimeter = 2 * math.pi * r
print('Area = ', area)
print('Perimeter = ', perimeter)