Mensuration Practice Test 10

iameter of copper sphere 18 cm = $\frac{18}{20}$
0.9 mm.
Volume = $\frac{4}{3}\mathit{\pi }{\mathit{r}}^3$ = $\frac{4}{3}\mathit{\pi }{\left(0.9\right)}^3$ = $0.972\mathit{\pi }$
Diameter of cylinder = 4 mm
Volume of cylinder = 0.972 p
${\mathit{r}}^2\mathit{h}$ = 0.972π
${\mathit{r}}^2\mathit{h}$ = 0.972
4h = 0.972
h = 0.243 mm
0.243×1,000 = 243 meters.
h = 243 m.