第1个回答 2011-11-18
1 3.1415927
2 6.2831853
3 9.4247780
4 12.5663706
5 15.7079633
6 18.8495559
7 21.9911486
8 25.1327412
9 28.2743339
10 31.4159265
11 34.5575192
12 37.6991118
13 40.8407045
14 43.9822971
15 47.1238898
16 50.2654825
17 53.4070751
18 56.5486678
19 59.6902604
20 62.8318531
21 65.9734457
22 69.1150384
23 72.2566310
24 75.3982237
25 78.5398163
26 81.6814090
27 84.8230016
28 87.9645943
29 91.1061870
30 94.2477796
31 97.3893723
32 100.5309649
33 103.6725576
34 106.8141502
35 109.9557429
36 113.0973355
37 116.2389282
38 119.3805208
39 122.5221135
40 125.6637061
41 128.8052988
42 131.9468914
43 135.0884841
44 138.2300768
45 141.3716694
46 144.5132621
47 147.6548547
48 150.7964474
49 153.9380400
50 157.0796327
51 160.2212253
52 163.3628180
53 166.5044106
54 169.6460033
55 172.7875959
56 175.9291886
57 179.0707812
58 182.2123739
59 185.3539666
60 188.4955592
61 191.6371519
62 194.7787445
63 197.9203372
64 201.0619298
65 204.2035225
66 207.3451151
67 210.4867078
68 213.6283004
69 216.7698931
70 219.9114857
71 223.0530784
72 226.1946711
73 229.3362637
74 232.4778564
75 235.6194490
76 238.7610417
77 241.9026343
78 245.0442270
79 248.1858196
80 251.3274123
81 254.4690049
82 257.6105976
83 260.7521902
84 263.8937829
85 267.0353755
86 270.1769682
87 273.3185609
88 276.4601535
89 279.6017462
90 282.7433388
91 285.8849315
92 289.0265241
93 292.1681168
94 295.3097094
95 298.4513021
96 301.5928947
97 304.7344874
98 307.8760800
99 311.0176727
100 314.1592654
第2个回答 2013-11-23
1∏≈3.14
2∏≈6.28
3∏≈9.42
4∏≈12.56
5∏≈15.7
6∏≈18.84
7∏≈21.98
8∏≈25.12
9∏≈28.26
10∏≈31.4
11∏≈34.54
12∏≈37.68
13∏≈40.82
14∏≈43.96
15∏≈47.1
16∏≈50.24
17∏≈53.38
18∏≈56.52
19∏≈59.66
20∏≈62.8
21∏≈65.94
22∏≈69.08
23∏≈72.22
24∏≈75.36
25∏≈78.5
26∏≈81.64
27∏≈84.78
28∏≈87.92
29∏≈91.06
30∏≈94.2
31∏≈97.34
32∏≈100.48
33∏≈103.62
34∏≈106.76
35∏≈109.9
36∏≈113.04
37∏≈116.18
38∏≈119.32
39∏≈122.46
40∏≈125.6
41∏≈128.74
42∏≈131.88
43∏≈135.02
44∏≈138.16
45∏≈141.3
46∏≈144.44
47∏≈147.58
48∏≈150.72
49∏≈153.86
50∏≈157
51∏≈160.14
52∏≈163.28
53∏≈166.42
54∏≈169.56
55∏≈172.7
56∏≈175.84
57∏≈178.98
58∏≈182.12
59∏≈185.26
60∏≈188.4
61∏≈191.54
62∏≈194.68
63∏≈197.82
64∏≈200.96
65∏≈204.1
66∏≈207.24
67∏≈210.38
68∏≈213.52
69∏≈216.66
70∏≈219.8
71∏≈222.94
72∏≈226.08
73∏≈229.22
74∏≈232.36
75∏≈235.5
76∏≈238.64
77∏≈241.78
78∏≈244.92
79∏≈248.06
80∏≈251.2
81∏≈254.34
82∏≈257.48
83∏≈260.62
84∏≈263.76
85∏≈266.9
86∏≈270.04
87∏≈273.18
88∏≈276.32
89∏≈279.46
90∏≈282.6
91∏≈285.74
92∏≈288.88
93∏≈292.02
94∏≈295.16
95∏≈298.3
96∏≈301.44
97∏≈304.58
98∏≈307.72
99∏≈310.86
100∏≈314
第3个回答 2011-11-18
3.14、6.28、9.42、12.56、15.7、18.84、21.98、25.12、28.26……记住这9个数不论两位数还是多位数与3.14相乘，错位做加法就可以了，很简便的。本回答被提问者采纳