| Exam Board | OCR MEI |
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| Module | Paper 3 (Paper 3) |
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| Year | 2019 |
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| Session | June |
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| Topic | Volumes of Revolution |
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15 A typical tube of toothpaste measures 5.4 cm across the straight edge at the top and is 12 cm high. It contains 75 ml of toothpaste so it needs to have an internal volume of \(75 \mathrm {~cm} ^ { 3 }\).
Comment on the accuracy of the formula \(V = \frac { 2 } { 3 } \pi r ^ { 2 } h\), as given in line 41 , for the volume in this case.
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