SOLUTION: How do you find the square footage (area) of a triangle given the 3 sides? What is the formula for that? I think that A=AB*CD but what is D? I am trying to figure out the square fo

Algebra ->  Triangles -> SOLUTION: How do you find the square footage (area) of a triangle given the 3 sides? What is the formula for that? I think that A=AB*CD but what is D? I am trying to figure out the square fo      Log On


   

Question 259076: How do you find the square footage (area) of a triangle given the 3 sides? What is the formula for that? I think that A=AB*CD but what is D? I am trying to figure out the square footage of a triangle shaped piece of land.
Answer by rfer(16322) About Me  (Show Source):
You can put this solution on YOUR website!
A=.5*L*W
Don't use the long side
You figure the area of a square and divide it in half