The area of a right triangle
Problem
Given the lengths of the two legs in a right triangle and output its area.
The area of a right triangle formula is
\(S = {1 \over 2} \cdot a \cdot b\),
a, b - length of legs.
Input format
Given two real numbers – length of legs (
a, b), each on a separate line (1 <= a, b <= 10
4).
Output format
Output one number - the area of a right triangle with an accuracy of at least three decimal places.
Examples
| N |
Input |
Output |
| 1 |
2.0
3.0 |
3.000 |
| 2 |
26.0
78.0 |
1014.000 |
| 3 |
3.5
7.8 |
13.650 |