I found this on WWW for the area of a triangle. Please tell me it is wrong.
https://www.fortypoundhead.com/showcontent.asp?artid=24319
https://www.fortypoundhead.com/showcontent.asp?artid=24319
It is WRONG.I found this on WWW for the area of a triangle. Please tell me it is wrong.
IMHO @atferrari had the best answer. It's a 3-4-5 right triangle. No need to go to wikiwhatever. Moreover, I can do the math in my head. I am not so sure I can do a square root so easily.The formula shown above is used to calculate the semi-perimeter not the area.
Here is the proper way to do it:
View attachment 174876
The area is calculated using this formula:
Reference:
https://www.wikihow.com/Calculate-the-Area-of-a-Triangle
The example under study in post #1 is easy because it is a right-angled triangle.IMHO @atferrari had the best answer. It's a 3-4-5 right triangle. No need to go to wikiwhatever. Moreover, I can do the math in my head. I am not so sure I can do a square root so easily.
Yes. Is solved what was shown there, an angle that had no other possibility than being right-angled. Entered the page of the VBA guy later.The example under study in post #1 is easy because it is a right-angled triangle.
If it is not a right-angled triangle you cannot use that method. It then becomes more complex.
The VB code that is posted (in a zip file) at the fortypoundhead site references "fifth grade math" as the source of the formula (you can look yourself). I don't know what the process was other than a simple error, possibly just as you described. What puzzles me is that it has gone uncorrected.Presumably, what the creator of the calculator page on fortypoundhead did was follow the same instructions on the wikihow site. Unfortunately he/she read and replicated the first step of the calculation and did not realize that there was a second part to the calculation.
It is definitely wrong. First, the units don't work out. Second, and answer of 60 for the area makes no sense for a triangle with sides of the length given. Clearly a 6 x 10 unit rectangle would fit easily inside that triangle.I found this on WWW for the area of a triangle. Please tell me it is wrong.
https://www.fortypoundhead.com/showcontent.asp?artid=24319
View attachment 174865
by Jake Hertz
by Aaron Carman
by Duane Benson