Jambmaths question:
A cylindrical tank has a capacity of 3080m2. What is the depth of the tank, if the diameter of its base is 14m?
Option A:
23m
Option B:
25m
Option C:
20m
Option D:
22m
Jamb Maths Solution:
$\begin{align} & V=\pi {{r}^{2}}h \\ & r=\frac{diameter}{2}=\frac{14m}{2}=7m \\ & 3080{{m}^{3}}=\frac{22}{7}\times ({{7}^{2}})\times h \\ & h=\frac{3080}{{{7}^{2}}\times 22}=20m \\\end{align}$
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