If the sides of a triangle are 30 cm, 28 cm and 10 cm, what is its area?
Choose the correct option:
A) 120 B) 110 C) 130 D) 140 E) 150

Rationale: "the triangle with sides 30 cm , 28 cm and 10 cm is right angled , where the hypotenuse is 30 cm . area of the triangle = 1 / 2 * 28 * 10 = 140 cm 2 answer : option d"
Answer: D