As you make your way through Tran Tunnels you will collect special coins for answering questions correctly. These coins will be needed later in your quest.

A cylinder of radius 10cm has a volume of 2 litres. Calculate the length of the cylinder. (Give your answer to 3 sig figs and type cm after your answer. Do not leave any spaces)

You are in Tran Tunnels

Can you answer this question? If you get the correct answer you will earn a coin and allowed to continue your journey through this maze to locate Goldberg's harpsichord?