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Please help i really need help with this one

9.
about 5/7 of the earth's surface is covered with water.
about 88 957 440 km squared is land. in km², about how
much of the earth's surface is covered with water?

Respuesta :

88957440/2=1/7 of the earths surface

44478720=1/7 of the earths surface

222393600km^2 is how much water covers the earth

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