1MA0 Higher November 2016 Paper 1 Q26
*26 The diagram shows a triangle \(DEF\) inside a rectangle \(ABCD\).
Diagram NOT accurately drawn
Show that the area of triangle \(DEF\) is 8 cm\(^2\).
You must show all your working. (4)
| Answer | Mark | Notes |
|---|---|---|
| 8 | 4 | M1 for \((2\sqrt{10})^2 - 2^2\) (= 36) A1 for (\(CD\) =) 6 M1 (dep on M1) for \(\text{‘}6\text{’} \times 4 - \dfrac{1}{2} \times \text{‘}6\text{’} \times 2 - \dfrac{1}{2} \times 2 \times 2 - \dfrac{1}{2} \times (\text{‘}6\text{’} - 2) \times 4\) C1 for area of 8 from fully correct working |