O-LevelMathematicsMensuration4024/11 · May/June 2018 · Q204 Marks
A paving slab is a cuboid with length 40cm, width 20cm and depth hcm. Its volume is 2400 cm³. [Figure 20.1]
- (a)Find the value of h.[1]
- (b)Calculate the volume of concrete needed to make 1000 of these slabs. Give your answer in m³.[1]
- (c)A mathematically similar slab has length 60cm. Calculate the volume of concrete, in cm³, needed to make one of these larger slabs.[2]
This question uses a diagram from the original paper, which isn't shown here. Open the full paper from the past papers archive to see it.
Mark scheme
Marking points from the official mark scheme (May/June 2018). The mark or mark type is shown in brackets.
- [1] 3
- [1] 2.4
- [2] 8100
- B1 for 27/8 or 8/27 soi or M1 for 30 × 60 × 4.5
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