4MA0 Foundation January 2014 Paper 1R Q14
14
Diagram NOT accurately drawn
A TV screen is rectangular.
The width of the rectangle is 64.8 cm and the height is 48.6 cm.
(a) Calculate the area of the rectangle.
Give your answer correct to 3 significant figures. (3)
Give your answer correct to 3 significant figures. (3)
Diagram NOT accurately drawn
The length of a diagonal of the rectangle gives the ‘size’ of the TV screen.
(b) Calculate the ‘size’ of the TV screen. (3)
| Scheme | Marks |
|---|---|
| 64.8 × 48.6 | M1 |
| 3150 | A2 |
| (3) |
Notes
A2: A1 for 3149.28 or this value rounded or truncated to 4 or 5 sig figs ie 3149, 3149.2, 3149
| Scheme | Marks |
|---|---|
| \(64.8^2 + 48.6^2\) or 4199.04 + 2361.96 or 6561 | M1 |
| \(\sqrt{64.8^2 + 48.6^2}\) | M1 |
| 81 | A1 |
| (3) | |
| (Total 6 marks) |
Notes
M1: for squaring and adding
M1: (dep) for square root