Higher June 2018 Paper 2 Q11
11 A solid metal sphere has radius 1.5 cm.
The mass of the sphere is 109.6 grams.
Work out the density of the sphere.
Give your answer correct to 3 significant figures.
(3)
| Scheme | Marks |
|---|---|
| \(V = \dfrac{4}{3} \times \pi \times 1.5^3\) (= 14.1(37)… or \(\dfrac{9}{2}\pi\)) | M1 |
| \(D = \dfrac{109.6}{\frac{4}{3}\pi \times 1.5^3}\) oe | M1 |
| 7.75 | A1 |
| (3) | |
| (3 marks) |
Notes
M1: Correct expression for volume.
M1: dep
A1: 7.75 – 7.78