Diameter of the earth is four time approximately the diameter of the moon then the ratio of their surface area is
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r of earth=x/2
r of moon=(x/2×4)÷1/2=×
surface area of earth=4pie (x/
2) (x/2)=pie X×X
surface area of moon=4pie x square
ratio=pie x square÷4pie x square =1:4ans
science871:
earth=x and moon =x/2
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