如何速记pai乘以1到20

Question

如题所述

Answer 1

π = 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 = 34.54 12π = 37,.68 13π = 40.82 14π= 43.96 15π = 47.1 16π = 50.24 17π = 53.38 18π = 56.52 19π = 59.66 20π = 62.8追问

我说的是速记 不是答案

对不起 大爷的！

Answer 2

π等于3.14
2π等于6.28
3π等于9.42
4π等于12.56
5π等于15.7
6π等于18.84
7π等于21.98
8π等于25.12
9π等于28.26
10π等于31.4
11π等于34.54
12π等于37.68
13π等于40.82
14π等于43.96
15π等于47.1
16π等于50.24
17π等于53.38
18π等于56.52
19π等于59.66
20π等于62.8

Answer 3

从兀X1开始记，然后背好兀X1，背好之后背兀X2，然后兀X1X2一起背，依此类推……

Answer 4

1兀=3.14,2兀=6.28，