1MA0 Higher June 2015 Paper 1 Q13
13 Here is a rectangle.
Diagram NOT accurately drawn
The 8-sided shape below is made from 4 of these rectangles and 4 congruent right-angled triangles.
Diagram NOT accurately drawn
Work out the perimeter of the 8-sided shape.
You must show all your working. (5)
| Answer | Mark | Notes |
|---|---|---|
| 48 | 5 | M1 for \(8 - 2\) (= 6) M1 (indep) for \(x^2 + 8^2\) (provided \(x \leqslant 8\)) M1 (dep on previous M1) for \(\sqrt{\text{``}x\text{''}^2 + 8^2}\) or \(\sqrt{\text{``}100\text{''}}\) M1 (dep on M2) for \(4 \times 2 + 4 \times \text{``}10\text{''}\) A1 cao |