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प्रश्न
Find the volume of a cube whose surface area is 150 m2 .
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उत्तर
\[\text { Surface area of the given cube = 150 } m^2 \]
\[\text { Surface area of a cube = 6 }\times \text { (side ) }^2 \]
\[ \Rightarrow 6 \times \text { (side ) }^2 = 150\]
\[ \Rightarrow \text { (side ) }^2 =\frac{150}{6} = 25 \]
\[\text { i . e . , side of the cube } = \sqrt{25} = 5 m\]
\[ \therefore \text { Volume of the cube = (side ) }^3 = (5 )^3 = 125 m^3\]
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