### Did you solve it? Catriona's colourful conundrums

Earlier today I set you the following five geometrical puzzles by Catriona Shearer. I hope you discovered the clever way of solving them, without recourse to pages of algebra. 1. Orange segments If the radius of each semicircle is 5, what’s the total shaded area? all illustrations © Catriona Shearer Solution: 100. If you rearrange…