Question
Find the volume of a sphere whose diameter is: $3.5\ dm$

Answer

Diameter $= 3.5\ dm,$
Radius $(r) 3.52 = 1.75\ dm$
Therefore volume $=\frac{4}{3\pi\text{r}^3}$
$=\frac{4}{3}\times\frac{22}{7}\times(1.75)^3$
$= 22.46\ dm^3$

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