Question

How to find the distance between (4,7) and (2,2)

Answer 1

To find the distance between two points:
d = sqrt.[(x1 - x2)^2 + (y1 - y2)^2]
plug in the given
(4,7) and (2,2) 
d = sqrt.[(4 - 2)^2 + (7 - 2)^2]
d = sqrt.[2^2 + 5^2]
d = sqrt.[4 + 25]
d = sqrt.[29]
d  ≈  5.4

Hope this helps