The task is to generate the correct answer for a given math problem.

Input: Consider Input: Problem: a cylindrical can has a radius of 3 centimeters and a height of 24 centimeters . what is the area , in square centimeters , of a rectangular label that completely covers the curved surface of the can without over - lapping ?

Output: 144 pi', 'e ) 576 pi'


Input: Consider Input: Problem: a jar contains a mixture of ab in the ratio 4 : 1 . when 40 l of mixture is replaced with liquid b , ratio becomes 2 : 3 . how many liters of liquid a was present in mixture initially .

Output: 64


Input: Consider Input: Problem: the cost price of a radio is rs . 1680 and it was sold for rs . 1450 , find the loss % ?


Output: 13