Intermediate November 2018 Unit 1 Q2
2.
Diagram not drawn to scale
(a) Draw an accurate scale drawing of the triangle shown above.
Use the scale: [3]
Use the scale: [3]
1 centimetre represents 3 metres.
(b) Use your scale drawing to calculate the actual length of side BC.
Give your answer in metres. [2]
Give your answer in metres. [2]
Actual length of BC = …………………… metres
| Scheme | Marks | Comments |
|---|---|---|
| Correct scale drawing | Allow tolerance of ±2mm and ±2°. Labelling need not be shown if vertices can be unambiguously identified. | |
| BAC = 55° | B1 | |
| AB = 6cm AND AC = 8cm AND triangle drawn | B2 | B1 for AB = 6cm OR AC = 8cm. |
| Scheme | Marks | Comments |
|---|---|---|
| Allow tolerance of ±2mm for ‘their BC’. | ||
| Length of ‘their BC’ × 3 | M1 | FT from ‘their BC’. |
| = 20·1 | A1 | ISW if correct evaluation seen (eg 20·1 rounded to 20) If no attempt at 2(a) then allow SC1 for an answer between 10·2 and 11·4 inclusive. |