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Exercise 13.4 Q7

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Exercise 13.4 Q7

    • Posted by Daksh Goyal 4 years, 9 months ago

    CBSE > Class 09 > Mathematics
    • 1 answers

    Ropal Singh Raghav 4 years, 9 months ago

    Let the radius of the earth=r Radius of the moon=r/4 Surface area of a sphere=4Πr2 Since,the earth as well as moon are considered to be sphere. Surface area of earth=4Πr2 Surface area of moon=4Π(r/4)2 Surface area of earth /Surface area of moon=4Πr2/4Π(r/4)2=r2/(r/4)2=16r2/r2=16/1=16:1

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