In triangle ABC, AB = 20 cm, BC = 16 cm and AC = 12 cm and the radius of circle inscribed in it is 4 cm. Find the area of triangle ABC.
Answer & explanation
Correct answer: option 3
We have a concept =
Area of triangle = Semi perimeter of triangle × radius of incircle
We have given that,
AB = 20 cm
BC = 16 cm
AC = 12 cm
Radius of incircle = 4 cm
Area of triangle = \(\frac{20 + 16 + 12}{2}\) × 4 = 96 cm2