The diameter of the moon is approrimately one-fourth of the diameter of the earth. What fraction •of the volume of the earth is the volume of the moon?

Let diameter of the earth = d units. Radius of the earth = :units. Diameter of the moon = d units. 4 Radius of the moon = :units. Volume of the earth Volume of the moon 64. Volume of the moon = • 1 64 volume of the earth. Hence, the volume of the moon is of the volume of the earth.