Mensuration Practice Test 9

1 litre = 1,000 $\mathit{c}{\mathit{m}}^3$
So, 25.872 Litre = 25,872 $\mathit{c}{\mathit{m}}^3$
Radius of the base = r
Height = 3r
Volume of the cylinder = $\mathit{\pi }{\mathit{r}}^2\mathit{h}$
= $\frac{22}{7}\times {\mathit{r}}^2\times 3\mathit{r}$ = 25872
${\mathit{r}}^3$ = 25872 × $\frac{7}{22}\times \frac{1}{3}$
${\mathit{r}}^3$ = 2744
r = 14 cm
Area of the base = $\mathit{\pi }{\mathit{r}}^2$
= $\frac{22}{7}\times 14\times 14$
= $616{\mathit{m}}^2$