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Hint: We know that the volume of a sphere with radius r is given by $\dfrac{4}{3}\pi {r^3}$, also we know that diameter d is given by \[d = 2r\], so using this two equations we will find the volume of the sphere in terms of diameter.
Complete step by step Answer:
We know that the volume of a sphere with radius r is given by $\dfrac{4}{3}\pi {r^3}$
Given that the diameter of the sphere is d. Therefore radius is $\dfrac{d}{2}$.
Therefore, The volume of the sphere is
\[ = \dfrac{4}{3}\pi {\left( {\dfrac{d}{2}} \right)^3}\]
On simplification we get,
\[ = \dfrac{{\pi {d^3}}}{6}\]
Therefore volume of a sphere of diameter d is \[\dfrac{{\pi {d^3}}}{6}\].
Hence (B) is the correct option.
Note: Note the formulae of finding the volume of the following figures.
Complete step by step Answer:
We know that the volume of a sphere with radius r is given by $\dfrac{4}{3}\pi {r^3}$
Given that the diameter of the sphere is d. Therefore radius is $\dfrac{d}{2}$.
Therefore, The volume of the sphere is
\[ = \dfrac{4}{3}\pi {\left( {\dfrac{d}{2}} \right)^3}\]
On simplification we get,
\[ = \dfrac{{\pi {d^3}}}{6}\]
Therefore volume of a sphere of diameter d is \[\dfrac{{\pi {d^3}}}{6}\].
Hence (B) is the correct option.
Note: Note the formulae of finding the volume of the following figures.
Figure | Volume |
Cube | \[{a^3}\] |
Cuboid | \[\begin{array}{*{20}{l}} {{\mathbf{l}} \times {\mathbf{b}} \times {\mathbf{h}}} \end{array}\] |
Sphere | $\dfrac{4}{3}\pi {r^3}$ |
Hemisphere | $\dfrac{2}{3}\pi {r^3}$ |
Cylinder | $\pi {r^2}h$ |
Cone | $\dfrac{1}{3}\pi {r^2}h$ |
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