**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 ** **