1至100π常规用表（π是3.14)

1 3.14 21 65.94 41 128.74 61 191.54 81 254.34
2 6.28 22 69.08 42 131.88 62 194.68 82 257.48
3 9.42 23 72.22 43 135.02 63 197.82 83 260.62
4 12.56 24 75.36 44 138.16 64 200.96 84 263.76
5 15.7 25 78.5 45 141.3 65 204.1 85 266.9
6 18.84 26 81.64 46 144.44 66 207.24 86 270.04
7 21.98 27 84.78 47 147.58 67 210.38 87 273.18
8 25.12 28 87.92 48 150.72 68 213.52 88 276.32
9 28.26 29 91.06 49 153.86 69 216.66 89 279.46
10 31.4 30 94.2 50 157 70 219.8 90 282.6
11 34.54 31 97.34 51 160.14 71 222.94 91 285.74
12 37.68 32 100.48 52 163.28 72 226.08 92 288.88
13 40.82 33 103.62 53 166.42 73 229.22 93 292.02
14 43.96 34 106.76 54 169.56 74 232.36 94 295.16
15 47.1 35 109.9 55 172.7 75 235.5 95 298.3
16 50.24 36 113.04 56 175.84 76 238.64 96 301.44
17 53.38 37 116.18 57 178.98 77 241.78 97 304.58
18 56.52 38 119.32 58 182.12 78 244.92 98 307.72
19 59.66 39 122.46 59 185.26 79 248.06 99 310.86
20 62.8 40 125.6 60 188.4 80 251.2