What is the area of triangle D(1,1), E(3,8), and F(8,0)

Answer 1

This makes a rt triangle.

With the given imfo i got 7*7/2=24.5

This isn't exact because of the angles.

Better:

side b=1^2+7^=50^.5= 7.07

side a=2^2+7^2=53^.5=7.28

*=51.47/2=25.739