A triangle has sides with lengths of 6, 9, and 8. What is the radius of the triangles inscribed circle?
1 Answer
Feb 10, 2016
You should use Heron's formula to find this answer
Find the semiperimeter, which is 11.5
Use Heron's to get Area =
inradius is
Explanation:
First find the semiperimeter which is the sum of the sides over 2
This is 11.5
Use this to plug into Heron's formula to get
Simplify to get
Now use the formula
Area = inradius * semiperimeter
Thus r =