Foundation January 2023 Paper 1R Q3
3
(a) Write down the mathematical name of this 3-D shape.
(b)
(i) How many faces does this shape have? (1)
(ii) How many vertices does this shape have? (1)
Here is a different 3-D shape.
Marie makes a model of the shape.
She uses a length of wire to make each edge of the model.
Each edge of the model is 5 cm long.
Marie has 70 cm of wire.
(c) What length of wire does she have left after making the model? (2)
| Scheme | Marks |
|---|---|
| Prism | B1 |
| (1) |
Notes
B1: Accept pentagon(al) prism
| Scheme | Marks |
|---|---|
| (i) Answer: 7 | B1 |
| (ii) Answer: 10 | B1 |
| (2) |
| Scheme | Marks |
|---|---|
| ±(70 – 8 × 5) or – 30 or 70 – 5 – 5 – 5 – 5 – 5 – 5 – 5 – 5 oe | M1 |
| Correct answer scores full marks (unless from obvious incorrect working) Answer: 30 | A1 |
| (2) | |
| (5 marks) |
Notes
M1: Could be done in 2 parts