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The earth is approx. a sphere. Its diameter is about 12 730 km. Water covers approx. 66 percent of the earths surface. How many square kilometres of land covers the earth?

  • math -

    Surface Area = 4 * pi * r^2

    A = 4 * 3.14 * 6,365^2

    A = 508,846,106


    0.34 * 508,846,106 = ?

  • math -

    thank-you soooo much ms.sue

  • math -

    You're very welcome, Tiffany.

  • math -

    where did you get the 0.34 from?

  • math -

    The world is made up of land and earth. If there is 66% water then there can only be 34% land (whats left). 66% water plus 34% land = 100% of what makes up the earth.

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