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Mensuration and Trigonometry
Quick questions on Volume and surface area of solids explained: N(A)-Level Mathematics Mensuration and Trigonometry
5short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.
What is volume?Show answer
Volume is the amount of space a solid occupies, measured in cubic units (cm, m). The main formulae are:
What is surface area?Show answer
Surface area is the total area of all the outer faces, measured in square units. To find it, work out the area of each face and add them up.
What is capacity?Show answer
Capacity is the volume a container can hold, usually given in litres or millilitres for liquids. A useful conversion is:
What is keeping units consistent?Show answer
Work in a single unit throughout. If some lengths are in metres and others in centimetres, convert them all to the same unit before calculating, or the volume will be wrong by a large factor.
What is wrong capacity conversion?Show answer
Remember litre, so divide cubic centimetres by to get litres.
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