HASANCIRCLE - Goni the Geometrician
Recently, Goni read a book by Plato. Inspired by Plato's life, he decided to invent a theorem related to geometry. While attempting to prove his own theorem, he encountered a problem and needs help to solve it.
Here the center of this circle is O(0,0). OA lies on X axis. And CB || OA . You have to find the area of ABCO.
INPUT: The first line contains two integers x,y, denoted the coordinate of C(x,y).
The next line contain one integer r .denoted the radius of this circle.
OUTPUT : Print the area of ABCO . The value calculated must be presented with 3 digits after the decimal point.
Sample input:
1 1
2
Sample output:
1.047
Sample input:
3 8
25
Sample output:
101.790
Added by: | Ruhul |
Date: | 2019-08-04 |
Time limit: | 1s |
Source limit: | 50000B |
Memory limit: | 1536MB |
Cluster: | Cube (Intel G860) |
Languages: | All |