Question

The distance between the given points $I(3.5,6.8)$ and $J(1.5,2.8)$ is

• A. $3\sqrt{5}$
• B. $\sqrt{5}$
• C. $2\sqrt{5}$
• D. $5\sqrt{5}$

Answer 1

The correct option is C $2\sqrt{5}$

The given points are

$I=(x_1,y_1)=(3.5,6.8)andJ=(x_2,y_2)=(1.5,2.8)$

The distance $d$ between $I\&J$ is

$d=\sqrt{{(x_1-x_2)}^2+{(y_1-y_2)}^2}=\sqrt{{(3.5-1.5)}^2+{(6.8-2.8)}^2}$ units

$=2\sqrt{5}$ units