Which is a better fit, a square peg in a round hole or a round peg in a square hole?
A floor is covered by a tessellation of equilateral triangles, each having three equal arcs inside it. What proportion of the area of the tessellation is shaded?
What fractions of the largest circle are the two shaded regions?
Bluey-green, white and transparent squares with a few odd bits of shapes around the perimeter. But, how many squares are there of each type in the complete circle? Study the picture and make. . . .
Identical squares of side one unit contain some circles shaded blue. In which of the four examples is the shaded area greatest?
Can you maximise the area available to a grazing goat?
How could you find out the area of a circle? Take a look at these ways.