Exam-Style Question on Mensuration
A mathematics exam-style question with a worked solution that can be revealed gradually
Question id: 242. This question is typical of the type of question in a GCSE Higher examination. The use of a calculator is allowed.
The volume of a cone can be calculated using the formula \(V=\frac13 \pi r^2 h \) and the area of the curved surface of a cone can be calculated using \(A= \pi r l\) (where \(r\) is the radius and \(l\) is the slant height).
(a) Calculate the volume of this frustum;
(b) Calculate the total surface area of this frustum.
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