Mathematics 0580 · IGCSE · Surface area and volume

Surface area and volume — practice question

A sphere made of bronze has a radius of 3.6 cm. Bronze has density $8.05\,\text{g cm}^{-3}$. For a sphere of radius $r$, the volume $V$ is given by $V = \frac{4}{3}\pi r^3$. Density = mass \div volume.
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Calculate the mass of the sphere. State your answer in kilograms, accurate to the nearest gram.

Worked solution & mark scheme

This 4-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Method used: $\frac{4}{3}\pi \times 3.6^3 \times 8.05$” …

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