4MA0 Foundation January 2018 Paper 2R Q18
18 The diagram shows shape A.
Diagram NOT accurately drawn
(a) Work out the area of shape A. (3)
Here is a prism with shape A as its cross section.
Diagram NOT accurately drawn
The volume of the prism is 350 cm³
The length of the prism is \(h\) cm.
(b) Work out the value of \(h\). (2)
| Scheme | Marks |
|---|---|
| Eg 3 × 6 or 18 or 3 × 4 or 12 or 8 × 2 or 16 or 5 × 2 or 10 or 8 × 6 or 48 or 4 × 5 or 20 | M1 |
| Eg 3 × 6 + 5 × 2 or 3 × 4 + 8 × 2 or 8 × 6 – 4 × 5 | M1 |
| 28 | A1 |
| (3) |
Notes
M1: For method to find the area of a rectangle
M1: Complete method
| Scheme | Marks |
|---|---|
| \(\dfrac{350}{\text{“}28\text{”}}\) or “28” × \(h\) = 350 | M1ft |
| 12.5 | A1ft |
| (2) |