Calculate the area of a triangle, if the sides of are 52 cm, 48 cm and 20 cm, what is its area?
Choose the correct choice from the following answers:
A) 480 cm 2
B) 580 cm 2
C) 380 cm 2
D) 180 cm 2
E) 280 cm 2

Rationale: "the triangle with sides 52 cm , 48 cm and 20 cm is right angled , where the hypotenuse is 52 cm . area of the triangle = 1 / 2 * 48 * 20 = 480 cm 2 answer : a"
Answer: A