The diameter of the moon is approximately `1/4` of the diameter of the earth. What fraction of the volume of the earth is the volume of the moon.

Explanation

`D=2r`

`D_m/D_e=(2rm)/(2re)=1/4`

`r_m=r_e/4`

`V_e=4/3pir_e^3`

`V_m=4/3pir_m^3=4/3pi(r_e/4)^3=1/64*4/3*pir_e^3`

`V_m=V_e/64`

Volume of noon is 1/64 part of volume of earth.