Calculate the area of a triangle, if the sides are 13 cm, 12 cm and 5 cm, what is its area?  Choose the correct choice from the following choices
A) 36 cm 2 B) 35 cm 2 C) 30 cm 2 D) 32 cm 2 E) 31 cm 2

Rationale: the triangle with sides 13 cm , 12 cm and 5 cm is right angled , where the hypotenuse is 13 cm . area of the triangle = 1 / 2 * 12 * 5 = 30 cm 2 answer : c
Answer: C