Foundation June 2024 Paper 2 Q7
7 Use a ruler for this question.
Here is an accurate drawing of an equilateral triangle.
By measuring, work out the perimeter of the triangle.
State the units of your answer. [3 marks]
| Answer | Mark | Comments |
|---|---|---|
| Alternative method 1: one side measured | ||
| 7.4 (cm) or 74 (mm) or 2.9 (inches) | B1 | \(\pm\) 2 mm allow [2.8, 3) |
| their \(7.4 \times 3\) or their \(74 \times 3\) or their \(2.9 \times 3\) or [21.6, 22.8] or [216, 228] or [8.4, 9) | M1 | oe their 7.4 must be [7, 8] their 74 must be [70, 80] their 2.9 must be [2.6, 3.2] |
| [21.6, 22.8] cm or [216, 228] mm or [8.4, 9) inches | A1ft | ft their 7.4 or their 2.9 with B0M1 awarded |
| Alternative method 2: more than one side measured | ||
| Each side measured as 7.4 (cm) or 74 (mm) or 2.9 (inches) | B1 | \(\pm\) 2 mm allow [2.8, 3) |
| their \(7.4 +\) their \(7.4 +\) their 7.4 or their \(74 +\) their \(74 +\) their 74 or their \(2.9 +\) their \(2.9 +\) their 2.9 or [21.6, 22.8] or [216, 228] or [8.4, 9) | M1 | oe their 7.4 must be [7, 8] their 74 must be [70, 80] their 2.9 must be [2.6, 3.2] |
| [21.6, 22.8] cm or [216, 228] mm or [8.4, 9) inches | A1ft | ft their 7.4 or their 2.9 with B0M1 awarded |
Additional guidance
| In alternative method 2 the sides do not have to be equal eg 7.5, 7.5, 7.6 \(= 22.6\) Cannot access the A mark as there are no units. | B1 M1A0ft |
| eg sides measured as 7.6, 7.6, 7.7 \(7.6 + 7.6 + 7.7\) \(= 22.9\) cm Cannot gain the B mark as 7.7 is out of range | B0 M1 A1ft |
| eg 75, 80, 80 answer 235 mm 80 is out of range for the B mark but in range for the M mark. Method mark implied by correct answer for their values | B0 M1A1ft |
| Further work after the correct answer seen eg 7.4 and \(22.2 \div 2 = 11.1\) cm | B1M1A0 |
| Ignore subsequent rounding once correct answer is seen | |
| Accept correct units seen with their answer in the working, even if missing from the answer line, provided they are not contradicted. | |
| Ignore any measurement of the height for the B mark |