The square root is 8.3066238
It would have had to be false because thats not true i hope this works.
Let's think about what splits the earth, the equator splits the earth from North to South. The Prime Meridian is what splits the earth from East to West.
La capital de Corea del Norte es Pyongyang
What you're looking for in here is the hardness: a material can scratch another material if it's harder than it.
So the desired material cannot be harder than amphibole, which has a hardness of 6.
But it has to be harder than fluorite, which has a hardness of 4.
So we're looking for a hardness of between 4 and 6 and from the table we see it's magnesite (we'll need a hard magesite) - this is the correct answer!
