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2015-02-15T12:34:55+05:30

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R=7cm r=3.5cm Ht=2cm Volume =πh/3(R²+r²+R×r) =22×2/7×3(7²+3.5²+7×3.5) =44/21(49+12.25+24.5) =44/21(85.75) =179.67 cm³
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2015-02-15T14:17:15+05:30

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Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
Here given R₁ = 7 cm ,R₂ = 3.5 cm and height = 2 cm.

To find = Volume of a frustum of a cone.

Volume of frustum of a cone = πh/3 ( R₁² + R₂² + R₁ × R₂ )
                                          = 22/7 × 2/3 ( 7² + 3.5² + 7 × 3.5 )
                                          = 44/21 ( 49 + 12.25 + 24.5 )
                                          = 44/21 × 85.75
                                          = 3773/21
                                          = 179.67 cm³ approx.
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