Question

Distance between A(4,0)andB(8,0)

Answer 1

you know dist formula and apply it

Answer 2

The answer is 4 units.

explanation :

$\sqrt{(x2 - x1) { }^{2} + (y2 - y1) {}^{2} }$

$\sqrt{(8 - 4) {}^{2} + (0 - 0) { }^{2} }$

$\sqrt{ {4 }^{2} + 0}$

$\sqrt{16}$

answers 4units