PROGRAMMING:The surface area of the ball
Programming in the text box text1 input ball radius, click the "calculation" button (name command1) to complete the calculation of the surface area of the ball.
###Input format:
Please enter the data in Text1.
###Output format:
The result is output in text2.
###Input example:
```in
Here is a set of inputs. For example:
one
0
-2.3
```
###Output example:
```out
The corresponding output is given here. For example:
three point one four
0
Sorry
```
answer：If there is no answer, please comment
###Input format:
Please enter the data in Text1.
###Output format:
The result is output in text2.
###Input example:
```in
Here is a set of inputs. For example:
one
0
-2.3
```
###Output example:
```out
The corresponding output is given here. For example:
three point one four
0
Sorry
```
answer：If there is no answer, please comment