4400 Higher November 2008 Paper 4 Q3
3 The diagram shows a wall.
Diagram NOT accurately drawn
(a) Calculate the area of the wall. (3)
(b) 1 litre of paint covers an area of 20 m².
Work out the volume of paint needed to cover the wall.
Give your answer in millilitres. (3)
Work out the volume of paint needed to cover the wall.
Give your answer in millilitres. (3)
| Scheme | Marks |
|---|---|
| \(0.5 \times 1.5 \times 1.2\) | M1 |
| triangle + \(2 \times 1.5\) | M1 |
| 3.9 | A1 |
| (3) |
Notes
M1: or 0.9
M1: \(2 \times 1.5 +\) ..... or \(3.2 \times 1.5 -\) ......
| Scheme | Marks |
|---|---|
| “3.9” / 20 or “3.9” × 0.05 | M1 |
| \(\times 1000\) | M1dep |
| 195 | A1f |
| (3) | |
| (6 marks) |
Notes
M1: or \(1000 \div 20\)
M1dep: × “3.9”
50 × “3.9” or \(1000 \div (20/\text{“}3.9\text{”})\) M2
SC: \(100 \div (20/\text{“}3.9\text{”})\) M1