Question

Find the distance between (6,2) and (9,12)

Answer 1

Distance bweteen (x1,y1) and (x2,y2) is
$D= \sqrt{(x2-x1)^2+(y2-y1)^2}$

so disatnce between (6,2) and (9,12) is
$D= \sqrt{(9-6)^2+(12-2)^2}$
$D= \sqrt{(3)^2+(10)^2}$
$D= \sqrt{9+100}$
$D= \sqrt{109}$

the distance is√109 units