Cutting cake
Logic
Level
1
Say you are cutting a cake. Unfortunately your knife is very blunt, so you want to use it the minimum amount of times. What is the minimum amount of times you can cut a cake that is 2cm tall and has a 5 cm radius to create 5 pieces. (The cake is circular).
The answer is 3.
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1 solution
You can cut the cake into quarters from the top, and then if you slice the quarters in half with 1 extra cut, you can make 8 pieces.