精选优质文档-----倾情为你奉上∏=3.14 2∏=6.28 3∏=9.42 4∏=12.56 5∏=15.7 6∏=18.847∏=21.98 8∏=25.12 9∏=28.26 10∏=31.4 42∏=50.24 52∏=78.5 62∏=113.04 72∏=153.86 82∏=200.9692∏=245.34 102∏=314112=121 122=144 132=169 142=196 152=225 162=196172=289 182=324 192=361202=400 252=625 352=1225452=2025∏=3.14 2∏=6.28 3∏=9.42 4∏=12.56 5∏=15.7 6∏=18.847∏=21.98 8∏=25.12 9∏=28.26 10∏=31.4 42∏=50.24 52∏=78.5 62∏=113.04 72∏=153.86 82∏=200.9692∏=245.34 102∏=314112=121 122=144 132=169 142=196 152=225 162=196172=289 182=324 192=361202=400 252=625 352=1225452=2025∏=3.14 2∏=6.28 3∏=9.42 4∏=12.56 5∏=15.7 6∏=18.847∏=21.98 8∏=25.12 9∏=28.26 10∏=31.4 42∏=50.24 52∏=78.5 62∏=113.04 72∏=153.86 82∏=200.9692∏=245.34 102∏=314112=121 122=144 132=169 142=196 152=225 162=196172=289 182=324 192=361202=400 252=625 352=1225452=2025∏=3.14 2∏=6.28 3∏=9.42 4∏=12.56 5∏=15.7 6∏=18.847∏=21.98 8∏=25.12 9∏=28.26 10∏=31.4 42∏=50.24 52∏=78.5 62∏=113.0472∏=153.86 82∏=200.9692∏=245.34 102∏=314112=121 122=144 132=169 142=196 152=225 162=196172=289 182=324 192=361202=400 252=625 352=1225452=2025专心---专注---专业。