Thread: [SOLVED] I desperately need help

I have a math exam in 2 days. i havent done the course, but my friend has tutored me , and i seem to know enough of the cirriculum to move on to the program i want next year. However, I do not know how to find the radius of a triangle. Can anyone help me ?

I'm sorry to say I'm not familiar with the radius of a triangle. I even looked it up on Wikipedia to make sure I'm not confusing syntax. Can you give an example of what you mean?

http://en.wikipedia.org/wiki/Triangle

Originally Posted by CSP

I have a math exam in 2 days. i havent done the course, but my friend has tutored me , and i seem to know enough of the cirriculum to move on to the program i want next year. However, I do not know how to find the radius of a triangle. Can anyone help me ?

I do not know what "radius of triangle" means.
However, I belive I might know what you are referring to.

Radius of Inscribed circle in Triangle" In that case we have that,
where is area and is semiperimeter. (Note to find area of triangle you might need to used some other theorems).

Radius of Circumscribed circle around triangle: In that case use the extended law of sines:
. (Note to find the angle of the triangle you might need to use the law of cosines to solve for angle).