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If the total surface area of …

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If the total surface area of the solid sphere is 98.56cm..find the radius of the sphere.

    • Posted by Karthick Raj 8 years, 4 months ago

    CBSE > Class 09 > Mathematics
    • 1 answers

    Rashmi Bajpayee 8 years, 3 months ago

    {tex}4\pi {r^2} = 98.56{/tex}

    =>     {tex}{r^2} = {{98.56 \times 7} \over {4 \times 22}}{/tex}

    =>     {tex}{r^2} = 7.84{/tex}

    =>     {tex}r=2.8{/tex} cm

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