Question 29

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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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