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प्रश्न
Radius of the Earth is 6400 km and that of Mars is 4300000 m. Whose radius is bigger and by how much?
उत्तर
Given, radius of the Earth = 6400 km
= 6400000 m .....[1 km = 1000 m]
And radius of Mars = 4300000 m
On comparing both the radii, we get
Radius of Earth > Radius of Mars
Difference between the two radii = 6400000 – 4300000 = 2100000 m
Hence, the radius of Earth is bigger and by 2100000 m.
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