The triangle classifies as a acute triangle.
If four coordinates are given then:-
- Find length of the sides using distance formula

- Now break down into two triangles .
- Use herons formula and find areas of the triangles .add them and get the area
1 second = 11%
2 seconds = 22%
45 × .22 = 9.9
answer: 9.9 meters
D=51/77
First set up the equation equal to zero(0), the distribute from there.