Level 3
The figure is not drawn to scale. It is made up of 2 concentric circles. O is the centre of the circles. OA is 7cm and OF is 5cm. OA, OB, OC, OD and OE cut the circles into 5 identical parts. Find the area of the shaded part. (Take π = 3.14)
3 m
Level 3
The figure shows a rectangular field which measures 80 m by 46 m. There is one 2 m wide footpath surrounding the field. Find the area of the footpath.
3 m
Level 3
A swimming pool measures 18 m by 9 m. It is surrounded by a path which is 4 m wide as shown. What is the area of the path?
3 m
Level 3
A garden path is to be cemented at $14 per m?. The inner circle has a radius of 60 m and the track is 30 m wide. What is the cost of cementing the track? Round off the answer to the nearest $1000. (Take π = 3.14)
3 m
Level 3
Rectangle WXYZ is made up of 3 identical squares. Given that the perimeter of Rectangle WXYZ is 80 cm, find the total area of the unshaded parts.
3 m