A sphere is a three-dimensional figure obtained by the revolution of a semicircle about its diameter as an axis.
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Volume of a sphere:
Let \(r\) be the radius of a sphere.
Volume of a sphere \(=\) 43πr3 cu. units
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Find the mass of \(5\) spherical balls, each of diameter \(8.4\) \(cm\).
Diameter of the spherical ball \((d)\) \(=\) \(8.4 \ cm\)
Radius of the spherical ball \((r)\) \(=\) d2=8.42=4.2 \(cm\)
Volume of the spherical ball \(=\) 43πr3 cu. units
\(=\) 43×227×4.23
\(=\) 43×227×4.2×4.2×4.2
\(=\) \(310.464\)
Volume of the spherical ball is \(310.464 \ cm^3\).
Volume of \(5\) spherical balls:
\(=\) \(310.464 \times 5\)
\(=\) \(1552.32\)
Therefore, the volume of \(5\) spherical balls is \(1552.32 \ cm^3\).
The value of \(\pi\) should be taken as 227 unless its value is shared in the problem.