Engineering Board Exam Reviewer · Properties of Triangles · medium

For the triangle with sides a=13, b=14 and c=15, find the exradius opposite side a.

  1. 10.5
  2. 12
  3. 14
  4. 4

Answer

A. 10.5

Solution

s=21 and the area is 84. ra=A/s-a=84/21-13=10.5.

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