Intermediate November 2017 Unit 1 Q3
3.
(a) In this part of the question, you will be assessed on the quality of your organisation, communication and accuracy in writing.
The two cuboids shown below have equal volumes.
Diagrams not drawn to scale
Calculate the height \(h\) of Cuboid B.
You must show all your working. [4 + 2 OCW]
(b) How many cubic centimetres (cm3) are there in 2·5 litres? [1]
2·5 litres = ……………… cm3
| Scheme | Marks | Comments |
|---|---|---|
| (Volume of cuboid A =) 6 × 3 × 2 (= 36cm3) OR (Volume of cuboid B =) 2 × 2 × h | M1 | M1 for sight of 36 OR 4h. |
| 6 × 3 × 2 = 2 × 2 × h OR 6 × 3 = 2 × h | M1 | This implies M1M1. |
| \(\dfrac{6 \times 3 \times 2}{2 \times 2} = h\) OR 36 = 4h | m1 | Award M1M1m1 for 6 × 3 × 2 = 2 × 2 × 9 (but not the A1) Allow correct FT value of 9 if ‘their 6 × 3 × 2’ ≠ 36 |
| (h =) 9(cm) | A1 | C.A.O. May be seen on diagram. |
| Organisation and Communication. | OC1 | For OC1, candidates will be expected to:
|
| Accuracy of writing. | W1 | For W1, candidates will be expected to:
|
| Scheme | Marks | Comments |
|---|---|---|
| 2500 | B1 | Answer space takes precedence. |