Question: don't understand b a) The Earth is approximately spherical with a radius of 6400 kilometres. Calculate the volume of the Earth giving your answer in

don't understand b

a) The Earth is approximately spherical with a radius of 6400 kilometres. Calculate the volume of the Earth giving your answer in scientific notation, correct to 2 significant figures. m b) The approximate volume of the Moon is 2 2 x 1010 cubic kilometres. Calculate how many times the Earth's volume is greater than the Moon's

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