紫衫请
by int32 @ 2021-12-04 14:36:34
@[continue_and_break](/user/542047) 题解不是装饰的，请紫衫
by Dream_weavers @ 2021-12-04 14:42:44
我觉得这是问你们语法而不是问公式吧
by peterwuyihong @ 2021-12-04 14:53:20
建议紫衫
by 划水的小伍 @ 2021-12-04 14:54:21
@[continue_and_break](/user/542047)
```python
r=float(input())
print("%.4f"%(2*r),"%.4f"%(2*3.14159*r),"%.4f"%(3.14159*r*r))
```
by peterwuyihong @ 2021-12-04 15:02:09
@[peterwuyihong](/user/100325) 谢谢，我就是问舍位的做法。
by EC75 @ 2021-12-04 15:05:42
t = float(input())
a = 2 * t
b = 3.14159 * 2 * t
c = 3.1415*t**2
print("{:.4f}{:.4f}{:.4f}".format(a,b,c))
by g3046335829 @ 2022-08-02 15:36:10