instruction:
The task is to generate the correct answer for a given math problem.
question:
Problem: the perimeter of a triangle is 36 cm and the inradius of the triangle is 2.5 cm . what is the area of the triangle
answer:
b ) 45


question:
Problem: a 9 % stock yields 8 % . the market value of the stock is :
answer:
rs . 112.50


question:
Problem: a train passes a station platform in 36 sec and a man standing on the platform in 25 sec . if the speed of the train is 54 km / hr . what is the length of the platform ?
answer:

165