Question

Find the distance between points P(1, 2) and Q(4, 8) to the nearest tenth.

Answer 1

The distance formula is an easy way to find it.
d=$\sqrt{ (x2-x1)^2 + (y2-y1)^2}$

So plug in your points.
$\sqrt{(4-1)^2 +(8-2)^2}$

Simplify
$\sqrt{9+36}$
$\sqrt{45}$
6.70820....
6.7