Detailed Instructions: Given a math problem with context and a question and 5 answer choices, the task is to provide the correct answer choice based on the problem. You must choose one of the given answer choices by letter: a, b, c, d, or e; anything else is invalid.
Problem:Problem: calculate the area of a triangle, if the sides of are 65 cm, 60 cm and 25 cm, what is its area ?
Options: a. 850 cm 2, b. 750 cm 2, c. 450 cm 2, d. 550 cm 2, e. 650 cm 2
Solution:
b