In this problem we are faced with an apparently easy area problem,
but it has gone horribly wrong! What happened?
Follow the instructions and you can take a rectangle, cut it into 4 pieces, discard two small triangles, put together the remaining two pieces and end up with a rectangle the same size. Try it!
You can move the 4 pieces of the jigsaw and fit them into both
outlines. Explain what has happened to the missing one unit of
This problem is taken from the UKMT Mathematical Challenges.View the archive of all weekly problems grouped by curriculum topic