Identical squares of side one unit contain some circles shaded blue. In which of the four examples is the shaded area greatest?
Which is a better fit, a square peg in a round hole or a round peg in a square hole?
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. . . .
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.