Foundation November 2020 Paper 1R Q10
10 The diagram shows a square and an isosceles triangle.
Diagram NOT accurately drawn
The square has sides of length 6 cm.
The base of the isosceles triangle is 6 cm.
The perimeter of the square is equal to the perimeter of the isosceles triangle.
The shaded shape is made by putting three of the isosceles triangles around the square as shown in the diagram below.
Diagram NOT accurately drawn
Work out the perimeter of the shaded shape.
Show your working clearly.
(4)
| Scheme | Marks |
|---|---|
| e.g. 4 × 6 (= 24) | M1 |
| e.g. (“24” – 6) ÷ 2 (= 9) | M1 |
| e.g. 18 × 3 + 6 or “9” × 6 + 6 | M1 |
| Working required Answer: 60 | A1 |
| (4) | |
| (4 marks) |
Notes
M1: for finding the perimeter of square
M1: for finding the length of the longest side in the triangle
M1: oe, allow their length of the longest side in the triangle as long as clearly stated or identified (could be on diagram)
A1: dep on M2