PROGRAMMING:Calculating the volume of a cylinder
Input the radius and height of the cylinder, and calculate the volumn of the cylinder, area= π* r*r*h. Please use the pi constant of the math module.
### Input Format:
input gives two real numbers in a row, which are radius r and height h
### Output Format:
The result is output in the form of "Volumn = value" , and is to keep three decimal places.
### Sample Inputs:
```in
3.6 10
```
### Sample Output:
```out
Volumn = 282.743
```
answer：If there is no answer, please comment
### Input Format:
input gives two real numbers in a row, which are radius r and height h
### Output Format:
The result is output in the form of "Volumn = value" , and is to keep three decimal places.
### Sample Inputs:
```in
3.6 10
```
### Sample Output:
```out
Volumn = 282.743
```
answer：If there is no answer, please comment