chemistry

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The total surface area of earth is about 1.97*10^8 square miles. the surface area of land on earth is about 5.73*10^7 square miles. find the ratio of the surface area of land to the entire planet.?

  • chemistry -

    ratio means one divided by the other.
    surface area/land area = 1.97*10^8/5.73*10^7

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