4400 Higher November 2007 Paper 3 Q15
15 Work out the area of the shaded sector of the circle.
Give your answer correct to 3 significant figures.
Diagram NOT accurately drawn
(4)
| Scheme | Marks |
|---|---|
| 360 − 50 | M1 |
| \(\dfrac{\text{“}310\text{”}}{360}\) or 0.861 | M1 |
| \(\dfrac{\text{“}310\text{”}}{360} \times \pi \times 12^2\) | M1 |
| 389 to 390 | A1 |
| (4) | |
| (4 marks) |
Notes
M1: \(\frac{50}{360}\)
M1: \(\dfrac{50}{360} \times \pi \times 12^2\)
M1: \(\pi \times 12^2 - \dfrac{50}{360} \times \pi \times 12^2\)