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britnee_paige99

  • one year ago

a metal right cylinder is melted and recast as a sphere. The radius of the cylinder was 4 and the height was 18. Find the volume and surface area of the sphere.

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  1. wolf1728
    • one year ago
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    Volume of cylinder = pi * radius^2 * height Volume of cylinder = pi * 4^2 * 18 Volume of cylinder = 904.779 Volume of a sphere = (4/3) * pi * r^3 We need the sphere volume to equal 904.778 so that means we have to solve for the radius r^3 = Volume of a sphere / (4/3) * pi r^3 = 904.779 / (4/3) * pi r^3 = 216 r = 6 Surface Area of a Sphere = 4 * pi * r^2 Surface Area = 452.3893

  2. anonymous
    • one year ago
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    |dw:1437387927823:dw||dw:1437389118086:dw|

  3. anonymous
    • one year ago
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    |dw:1437389804224:dw|

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