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RADIUS OF THE EARTH

by weojnweronweroinwero

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15
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RADIUS OF THE EARTH

Act One

Act Three

  • ImageDiagram
  • Teacher note
    7.5 degrees is 1/48 of a full circle, so if 7.5 degrees represents an arc length of 844km, then 844km x 48 is the total circumfrence of the Earth = 40,512km.

    Circumfrence is 2*pi*radius, so radius is circumfrence divided by 2pi = 6447.7km

    This is reasonably close to the actual answer.
  • LinkEarth radius

Sequel

  • 1.

    How much water would fill a hollow Earth?

  • 2.

    How many Earth's would fit between the Earth and the Sun?

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