1到100π的值:
1π=3.14,2π=6.28,3π=9.42,4π=12.56,5π=15.7,6π=18.84,7π=21.98,8π=25.12,9π=28.26,10π=31.4
11π=35.45,12π=37.68,13π=40.83,14π=43.96,15π=47.1,16π=50.24,17π=53.38,18π=56.52,19π=59.66,20π=62.8
21π=65.94,22π=69.08,23π=72.22,24π=75.36,25π=78.5,26π=81.64,27π=84.78,28π=87.92,29π=91.06,30π=94.2
31π=97.34,32π=100.48,33π=103.62,34π=106.76,35π=109.9,36π=113.04,37π=116.18,38π=119.32,39π=122.46,40π=125.6
41π=128.74,42π=131.88,43π=135.02,44π=138.16,45π=141.3,46π=144.44,47π=147.58,48π=150.72,49π=153.86,50π=157
51π=160.14,52π=163.28,53π=166.42,54π=169.56,55π=172.7,56π=175.84,57π=172.98,58π=182.12,59π=185.26,60π=188.4
61π=191.54,62π=194.68,63π=197.82,64π=200.96,65π=204.1,66π=207.24,67π=210.38,68π=213.52,69π=216.66,70π=219.8
71π=222.94,72π=226.08,73π=229.22,74π=232.36,75π=235.5,76π=238.64,77π=241.78,78π=244.92,79π=248.06,80π=251.2
81π=254.34,82π=257.48,83π=260.62,84π=263.76,85π=266.9,86π=270.04,87π=273.18,88π=276.32,89π=279.46,90π=282.6
91π=285.74,92π=288.88,93π=292.02,94π=295.16,95π=298.3,96π=301.44,97π=304.58,98π=307.72,99π=310.86,100π=314
圆周率(Pi)是圆的周长与直径的比值,一般用希腊字母π表示,是一个在数学及物理学中普遍存在的数学常数。π也等于圆形之面积与半径平方之比。是精确计算圆周长、圆面积、球体积等几何形状的关键值。 在分析学里,π可以严格地定义为满足sin x = 0的最小正实数x。
圆周率用希腊字母 π(读作pài)表示,是一个常数(约等于3.141592654),是代表圆周长和直径的比值。它是一个无理数,即无限不循环小数。在日常生活中,通常都用3.14代表圆周率去进行近似计算。
百度百科-圆周率 (圆的周长与直径的比值)
3.14
6.28
9.42
12.56
15.7
18.84
21.98
25.12
28.26
31.4
34.54
37.68
40.82
43.96
47.1
50.24
53.38
56.52
59.66
62.8
65.94
69.08
72.22
75.36
78.5
81.64
84.78
87.92
91.06
94.2
97.34
100.48
103.62
106.76
109.9
113.04
116.18
119.32
122.46
125.6
128.74
131.88
135.02
138.16
141.3
144.44
147.58
150.72
153.86
157
160.14
163.28
166.42
169.56
172.7
175.84
178.98
182.12
185.26
188.4
191.54
194.68
197.82
200.96
204.1
207.24
210.38
213.52
216.66
219.8
222.94
226.08
229.22
232.36
235.5
238.64
241.78
244.92
248.06
251.2
254.34
257.48
260.62
263.76
266.9
270.04
273.18
276.32
279.46
282.6
285.74
288.88
292.02
295.16
298.3
301.44
304.58
307.72
310.86
314
1 3.14
2 6.28
3 9.42
4 12.56
5 15.70
6 18.84
7 21.98
8 25.12
9 28.26
10 31.40
11 34.54
12 37.68
13 40.82
14 43.96
15 47.10
16 50.24
17 53.38
18 56.52
19 59.66
20 62.80
21 65.94
22 69.08
23 72.22
24 75.36
25 78.50
26 81.64
27 84.78
28 87.92
29 91.06
30 94.20
31 97.34
32 100.48
33 103.62
34 106.76
35 109.90
36 113.04
37 116.18
38 119.32
39 122.46
40 125.60
41 128.74
42 131.88
43 135.02
44 138.16
45 141.30
46 144.44
47 147.58
48 150.72
49 153.86
50 157.00
51 160.14
52 163.28
53 166.42
54 169.56
55 172.70
56 175.84
57 178.98
58 182.12
59 185.26
60 188.40
61 191.54
62 194.68
63 197.82
64 200.96
65 204.10
66 207.24
67 210.38
68 213.52
69 216.66
70 219.80
71 222.94
72 226.08
73 229.22
74 232.36
75 235.50
76 238.64
77 241.78
78 244.92
79 248.06
80 251.20
81 254.34
82 257.48
83 260.62
84 263.76
85 266.90
86 270.04
87 273.18
88 276.32
89 279.46
90 282.60
91 285.74
92 288.88
93 292.02
94 295.16
95 298.30
96 301.44
97 304.58
98 307.72
99 310.86
100 314.00
好象有PI表可以查的!
没看明白什么意思啊。