Question

What is the distance between `(1, 6)` and `(2,5)`?

Answer 1

`sqrt(2)`

Explanation:

Distance between (x1, y1) and (x2, y2) is given by:
`D = sqrt((x2-x1)^2+(y2-y1)^2)`
Then,
`D = sqrt((2-1)^2+(5-6)^2`
`= sqrt(1^2+(-1)^2)`
`= sqrt(2)`