Questions

From Worst to Best

26 P6.AP.TL.17090824

Level 3
A piece of rope is used to make the figure shown. Inside the big semicircle are 2 small circles and 3 small semi-circles, all of which have the same radius. The diameter of the big semicircle is 30 cm. Find the area of the shaded region. (Leave the answer in terms of π)

4 m

Attempt

27 P6.AP.TL.17090833

Level 3
The figure is made up of identical quadrants. The radius is 10 cm long. Take π as 3.14.

Find the area of the shaded part.
Find the perimeter of the shaded part.

4 m

Attempt

Circle area Quarter circle Composite figure perimeter Composite figure area

28 P6.AP.TL.17090834

Level 3 PSLE
OPQRS is part of a circle of radius 10 cm. OPR and OQS are quarter circles. The area of the shaded part OQR is 40 cm² and the perimeter of the shaded part OQR is 30 cm. For each of the following, use the calculator value of π to find:

the area of the figure OPQRS, correct to 2 decimal places,
the perimeter of the figure OPQRS, correct to 1 decimal places.

4 m

Attempt

Quarter circle Composite figure perimeter Composite figure area D Place values D Round off

29 P6.AP.TL.17090835

Level 3
The figure shows one big quadrant and two small semicircles. The radius of the big quadrant is 60 cm.

Find the perimeter of the shaded figure. (Take π = 3.14)
Find the shaded area of this figure. (Take π = 3.14)

4 m

Attempt

Triangle Semicircle Quarter circle Composite figure perimeter Composite figure area

30 P6.AP.TL.17090837

Level 3
The figure is not drawn to scale. It is formed by quadrants and semicircles of two sizes. The radius of the larger quadrant is 3 cm longer than the radius of the smaller quadrant. The radius of the smaller quadrant (Line B) is 12 cm.