Foundation June 2017 Paper 1 Q25
25 This rectangular frame is made from 5 straight pieces of metal.
The weight of the metal is 1.5 kg per metre.
Work out the total weight of the metal in the frame. (5)
| Answer | Mark | Notes |
|---|---|---|
| 70.5 | P1 | starts process of Pythagoras e.g. \(5^2 + 12^2\) |
| P1 | complete process for Pythagoras e.g. \(\sqrt{5^2 + 12^2}\) or \(\sqrt{25 + 144}\) or \(\sqrt{169}\ (=13)\) | |
| P1 | (dep P1 for Pythagoras) process of adding all the lengths e.g. \(5 + 5 + 12 + 12 + \text{``}13\text{''}\ (=47)\) | |
| P1 | (indep) process of multiplying at least 2 lengths by 1.5 | |
| A1 | cao SC: any evidence of working with Pythagoras award the P1 or P2 |