Higher June 2018 Paper 1 Q8
8 The perimeter of a right-angled triangle is 72 cm.
The lengths of its sides are in the ratio 3 : 4 : 5
Work out the area of the triangle. (4)
| Answer | Mark | Mark scheme |
|---|---|---|
| 216 | P1 | for process to work with ratio eg \(72 \div (3 + 4 + 5)\) (= 6) or \(72 \div 12\) (= 6) |
| P1 | for process to find length of base or height of triangle eg \(3 \times \text{``}6\text{''}\) (= 18) or \(4 \times \text{``}6\text{''}\) (= 24) OR process to find area scale factor eg \(\text{``}6\text{''} \times \text{``}6\text{''}\) (= 36) | |
| P1 | complete process to find the area of the triangle eg \(\frac{1}{2} \times \text{``}18\text{''} \times \text{``}24\text{''}\) or \(\frac{1}{2} \times 3 \times 4 \times \text{``}6\text{''}^2\) | |
| A1 | cao |