@[zhouzhangshuo](/user/654804) 不会用代码块就不要发
\```python
r=float(input())
print("%.4f"%(2r),"%.4f"%(23.14159r),"%.4f"%(3.14159r*r))
\```
才是正确的！
```python
r=float(input())
print("%.4f"%(2r),"%.4f"%(23.14159r),"%.4f"%(3.14159r*r))
```
by zym0325 @ 2023-05-30 21:19:28
《23.14159》
这是代码不是数学题
by huangruiheng0217 @ 2023-05-30 21:21:05
@[zhouzhangshuo](/user/654804) 问题错在您混淆了 python 中的乘和现实中的圆的公式，将乘号省略掉了，自然不对
by zym0325 @ 2023-05-30 21:21:37
@[huangruiheng0217](/user/505954) 不只是，还有 3.14159r
by zym0325 @ 2023-05-30 21:22:27
就挺 $6$ 的
by huangruiheng0217 @ 2023-05-30 21:26:01
这是 markdown 把 `*` 吃了吧……
他想发的应该是
```python
r=float(input())
print("%.4f"%(2*r),"%.4f"%(2*3.14159*r),"%.4f"%(3.14159*r*r))
```
by Strelitzia_ @ 2023-05-31 19:13:42
```python
r=float(input())
d=2*r
d= round(d, 4)
print(d)
l=3.14159*d
l=round(l, 4)
print(l)
s=3.14159*r*r
s= round(s, 4)
print(s)
```
by liyandong @ 2023-06-09 23:04:11
```python
r, π = float(input()), 3.14159
d = r * 2
C = π * d
S = π * r * r
print("%.4f %.4f %.4f" %(d, C, S))
```
by WhtshpBlkhse @ 2023-07-02 18:08:13