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Radius/diameter . . . Earth's is 1.876 as big as Mars's

Surface area. . . . . . 3.521 times as much as Mars has

Volume . . . . . . . . . . 6.62 times as much as Mars's

Mass. . . . . . . . . . . . 9.35 times as much as Mars has

Surface gravity. . . . 2.66 times as strong as Mars's

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12y ago

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