The diameter of the moon is approximately one-fourth of the diameter of the earth. What fraction of the volume of the earth is the volume of the moon?
Solution:
The diameter of the moon is approximately one-fourth of the diameter of the earth. It means that radius of the moon is approximately one-fourth of the radius of the earth.
Let radius of the moon
Let radius of the earth
Volume of the moon = Volume of the sphere
Volume of the earth = Volume of the sphere
Ratio of their volumes
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