#
# µû¶óÇÏ¸ç ¹è¿ì´Â ÆÄÀ̽ã°ú µ¥ÀÌÅÍ°úÇÐ(»ý´ÉÃâÆÇ»ç 2020)
# LAB 2-2 ÇÇÀÚÀÇ ¸éÀûÀ» °è»êÇغ¸ÀÚ, 50ÂÊ
#
radius = 20
area = 3.14 * radius**2
circumference = 2 * 3.14 * radius
print('ÇÇÀÚ ¸éÀûÀº', area, 'µÑ·¹´Â',circumference)