Intermediate November 2021 Unit 1 Q4
4. A cuboid measures 5 cm by 3 cm by 2 cm.
(a) Calculate the volume of the cuboid.
Give your answer in cm3. [2]
Give your answer in cm3. [2]
Volume = ………………… cm3
(b) Calculate the total surface area of the cuboid.
Give your answer in cm2. [3]
Give your answer in cm2. [3]
Total surface area = ………………… cm2
| Scheme | Marks | Comments |
|---|---|---|
| (Volume =) 5 × 3 × 2 = 30 (cm3) | M1 A1 | Any additional calculation e.g. 30 ÷ 2 = 15 is M0. |
| Scheme | Marks | Comments |
|---|---|---|
| Sight of 5 × 3 (=15) AND 5 × 2 (=10) AND 3 × 2 (=6) | B1 | |
| (Total Surface Area =) (5×3 + 5×2 + 3×2) × 2 | M1 | For addition of all six surface areas. (Must be three different pairs.) FT ‘their 15’, ‘their 10’ and ‘their 6’ |
| 62 (cm2) | A1 | C.A.O. |