Find the volume of the right circular cone with radius $3.5 c m$ , height $12 c m$

154 {c m}^{3}

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124 {c m}^{3}

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254 {c m}^{3}

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104 {c m}^{3}

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Solution

The correct option is A $154 {c m}^{3}$
Volume of a cone $= \frac{1}{3} π r^{2} h$
Hence, volume of this cone $= \frac{1}{3} \times \frac{22}{7} \times {(\frac{7}{2})}^{2} \times 12 = 154 {c m}^{3}$

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