how many moons can fit across the earth
The volume of the Moon is 21,970,000,000 cu km The volume of the Earth is 1,070,000,000,000 cu km So, 1070000000000 divided by 21970000000 = 48.7028 times. 49 moons could fit into the size of earth... The volume of the moon is 0.02 times the volume of the Earth, so you could about fit 50 moons inside the Earth (it wouldn't be a perfect fit, because spheres don't compact tightly together, there is some space in between each sphere). Volume of a sphere is 4/3(Pi)r^3, where the lunar radius is 1080 miles and the Earth's is 3912. The details are left to the Student.