The mean radius of the Earth is 6.37 x 106 m, and that of the Moon is 1.74 x 108 cm. From these data calculate
(a) The ratio of the Earth’s surface area to that of the Moon and
(b) The ratio of the Earth’s volume to that of the Moon. Recall that the surface area of a sphere is 4πy2 and the volume of a sphere is 4/3 πr3

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