Find the distance between the following pairs of point: `P(1,-1,0)a n d Q(2,1,2)`

Explanation

Given that,
two purpose `P(1,-1,0) and Q(2,1,2)`
We have to find the distance between these two purposes.
the distance between any two purposes `P(a,b,c) and Q(k,l,m)` is given by,
`sqrt((a-k)^2+(b-l)^2+(c-m)^2)`
so, accordingly the distance between `P(1,-1,0) and Q(2,1,2)`is,
`=sqrt((1-2)^2+(-1-1)^2+(0-2)^2)`
`=sqrt((-1)^2+(-2)^2+(-2)^2)`
`=sqrt(1+4+4)`
`=sqrt(9)`
`=3`