Intermediate November 2019 Unit 1 Q18
18. In the following formulae, each measurement of length is represented by a letter.
Consider the dimensions implied by the formulae.
For each case, write down whether the formula could be for a length, an area, a volume or none of these.
The first one has been done for you. [3]
| Formula | Formula could be for |
|---|---|
| \(3{\cdot}14r^2 - dw\) | area |
| \(w^3 + r^2d\) | …………………… |
| \(3w + 2d + h\) | …………………… |
| \(dhr + 5d^3\) | …………………… |
| \(4d + \pi r^2\) | …………………… |
| \(\dfrac{dwh}{r}\) | …………………… |
| Scheme | Marks | Comments |
|---|---|---|
| (area) Volume Length Volume None Area | B3 | Must use the terminology given in the question. B3 for all 5 correct. B2 for 3 or 4 correct. B1 for 2 correct. B0 otherwise. |