A triangle with sides 5 cm, 12 cm, and 13 cm has an inradius of 2 cm. What is its area?
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. 30 cm2.
Semi-perimeter (s) = (5 + 12 + 13)/2 = 30/2 = 15 cm
Area = Inradius × s = 2 × 15 = 30 cm2