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

Input: Consider Input: Problem: a certain rectangular crate measures 8 feet by 14 feet by 16 feet . a cylindrical gas tank is to be made for shipment in the crate and will stand upright when the crate is placed on one of its six faces . what should the radius of the tank be if it is to be of the largest possible volume ?

Output: 6

Input: Consider Input: Problem: two cubes have their volumes are in the ratio 1 : 27 . find the ratio of their surface area ?

Output: 1 : 9', 'd ) 2 : 7', 'e ) 3 : 11'

Input: Consider Input: Problem: if 7 spiders make 7 webs in 7 days , then how many days are needed for 1 spider to make 1 web ?
Output: 7