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प्रश्न
Find the volume of a cylinder whose r = 2.8 m, h = 15 m .
उत्तर
\[ \text{ Given } : \]
\[r = 2 . 8 m, h = 15 m\]
\[ \text{ Volume of cylinder, } V = \pi r^2 h\]
\[ = \frac{22}{7} \times \left( 2 . 8 \right)^2 \times 15\]
\[ = 369 . 6 m^3\]
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