waecmaths question:
A conical water–jug is 7cm in diameter and 6cm deep. Find the volume of water it can hold [Take $\pi =\tfrac{22}{7}$ ]
Option A:
22cm3
Option B:
44cm3
Option C:
77cm3
Option D:
308cm3
waecmaths solution:
$V=\tfrac{1}{3}\pi {{r}^{2}}h=\tfrac{1}{3}\times \tfrac{22}{7}\times {{(\tfrac{7}{2})}^{2}}\times 6=308c{{m}^{3}}$
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