Foundation November 2021 Paper 1 Q25
25 The diagram shows a prism.
The cross section of the prism is a right-angled triangle.
The base of the triangle has length 5 cm
The prism has length 25 cm
The prism has volume 750 cm3
Work out the height of the prism. (3)
| Answer | Mark | Mark scheme |
|---|---|---|
| 12 | P1 | for a process to find the area of cross section, eg \(750 \div 25\ (= 30)\) oe or \(\dfrac{1}{2} \times 5 \times h\) oe |
| P1 | for a correct equation in \(h\), eg \(750 \div 25 = \dfrac{1}{2} \times 5 \times h\) oe or \(\dfrac{1}{2} \times 5 \times h \times 25 = 750\) oe or for a complete process to find \(h\), eg \(\dfrac{750}{25} \times \dfrac{2}{5}\) oe or \(\text{``}30\text{''} \times 2 \div 5\) | |
| A1 | cao SC B1 for answer of 6 if P0 scored |
Additional guidance
May use any letter for \(h\) or may use ?