• Question: How large is the earth in centre metres?

    Asked by Emily and Beth to Daniel, Greg, Lowri on 17 Mar 2016.
    • Photo: Lowri Evans

      Lowri Evans answered on 17 Mar 2016:

      Not off the top of my head!

      However, according to Wikipedia the Earth’s circumference at the equator is 40,075.017km. There are 1000 metres in a kilometre and 100cm in a metre, so the Earth’s circumference in cm would be:

      40,075.017 x 1000 x 100 = 4,007,501,700 cm

      (i.e. just over 4 billion cm)

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