instruction:
The task is to generate the correct answer for a given math problem.
question:
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 ?
answer:
6


question:
Problem: how many diagonals does a polygon with 13 sides have , if one of its vertices does not connect to any diagonal ?
answer:
54


question:
Problem: a cube of edge 16 cm is immersed completely in a rectangular vessel containing water . if the dimensions of the base of vessel are 20 cm * 15 cm , find the rise in water level ?
answer:

13.65 cm