problem
Favourite
Blue and White
Age
11 to 14
Challenge level
Identical squares of side one unit contain some circles shaded blue. In which of the four examples is the shaded area greatest?
problem
Favourite
Triangles and petals
Age
14 to 16
Challenge level
An equilateral triangle rotates around regular polygons and
produces an outline like a flower. What are the perimeters of the
different flowers?
problem
Favourite
An Unusual Shape
Age
11 to 14
Challenge level
Can you maximise the area available to a grazing goat?
problem
Favourite
Curvy areas
Age
14 to 16
Challenge level
Have a go at creating these images based on circles. What do you notice about the areas of the different sections?
problem
Favourite
Track design
Age
14 to 16
Challenge level
Where should runners start the 200m race so that they have all run the same distance by the finish?