**Given:** Points are (-2, 3, 1) and (2, 1, 2)

**To find:** Distance between given two points

**Formula used:** The distance between any two points (a, b, c) and (m, n, o) is given by,

\(\sqrt{(a-m)^2+(b-n)^2+(c-0)^2}\)

Therefore,

Distance between (-2, 3, 1) and (2, 1, 2) is

= \(\sqrt{(-2-2)^2+(3-1)^2+(1-2)^2}\)

= \(\sqrt{(-4)^2+(2)^2+(-1)^2}\)

= \(\sqrt{16+4+1}\)

= \(\sqrt{21}\)

Hence, Distance between two given points is √21 units