Higher January 2023 Paper 2 Q21
21 Given that the surface area of a sphere is \(49\pi\) cm2
find the volume of the sphere.
Give your answer correct to the nearest integer.
(3)
| Scheme | Marks |
|---|---|
| \(r = \sqrt{\dfrac{49\pi}{4\pi}}\) oe (= 3.5) | M1 |
| [volume =] \(\dfrac{4}{3} \times \pi \times \text{``}{3.5}\text{''}^3\) | M1 |
| Correct answer scores full marks (unless from obvious incorrect working) Answer: 180 | A1 |
| (3) | |
| (3 marks) |
Notes
A1: awrt 180