PROGRAMMING:JMU Python to find the area of a circle
Enter a numerical value to represent the radius of the circle and calculate the area of the corresponding circle. PI constant in math library is required for PI.
###Input format:
Input numerical data, for example: 1.5
###Output format:
Output circle area, require two decimal places, for example: 7.07
###Input example:
Here is a set of inputs. For example:
```in
one point five
```
###Output example:
The corresponding output is given here. For example:
```out
seven point zero seven
```
answer：If there is no answer, please comment
###Input format:
Input numerical data, for example: 1.5
###Output format:
Output circle area, require two decimal places, for example: 7.07
###Input example:
Here is a set of inputs. For example:
```in
one point five
```
###Output example:
The corresponding output is given here. For example:
```out
seven point zero seven
```
answer：If there is no answer, please comment