Level 2
The figure is formed by a circle and an isosceles triangle where PQ = PR. The radius of the circle is 14 cm. Find the area of the shaded part. (Take π = 227)
2 m
Level 3
The figure is formed by a circle and an isosceles triangle XYZ. The diameter of the circle is 56 cm. Find the difference in area between the two shaded parts. (Take π = 227)
3 m
Level 3
The figure, not drawn to scale, is made up of semicircles in a rectangle ABCD. XY is the common baseline for all the semi-circles.
  1. Find the length of AB.
  2. Using the calculator π, find the perimeter of the shaded parts. Give the answer correct to 2 decimal places.
3 m
Level 3
Find (a) the perimeter and (b) the area of the figure. (Take π = 227)
3 m
Level 3
The figure is not drawn to scale. It has 4 big semicircles with diameter 100 cm each and 5 small semicircles with diameter 48 cm. What is the area of the shaded figure? Take π = 3.14
3 m