Fractions of Pi
'If the white Square is 1, what are all the other areas?'' Can you work out the areas of all the shapes in this picture? Each new area should give you a clue to the next and you will have to reason your way through the puzzle shape by shape to work out what fraction each new area is is of one of the others. What should they add up to when you are finished? Do they? This activity gives you the chance to practise...