Title Builder Beta See instructions

Welcome to Title Builder Beta.

This small piece of kit is designed to make building your Quiz, Crossword or Puzzle question more effective. It should make finding your question easier for others and, the easier it is to find, the more likely someone is to answer it!

To build an easy to find question title simply select the paper and quiz, enter the quiz number if relevant and fill in the Publication Date. Once you’re happy click “Build Title” and the information should populate the Title field. Fill in the final required details of your question as you normally would, and click submit.

As this is a Beta we only have a limited number of papers and quizzes listed. If you think your favourite Quiz, Crossword or Puzzle should be listed here don’t hesitate to contact us.

Remember: You do not have to use the title builder - simply enter the title and question as you normally would and click submit!

Paper & Quiz:

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minimum surface areas

asroc | 17:54 Wed 14th Feb 2007 | Quizzes & Puzzles

7 Answers

A goldsmith is to coat all five faces of an equilateral triangular prism (equilateral triangular cylinder) of prescribed volume 4/srt3 cubic cm. How long should this prism be so that the surface area of coating is minimised? (find the surface area A as a function of some unknown x introuced by you; then find the value of x to make dA/dx=0)