Question

Find the distance between P and Q if P is a point on the x axis with abscissa 12 and Q is (8, 3)

• A. 4
• B. 7
• C. 5
• D. none

Answer 1

Answer: (C)

5

The distance between points $(x_1,y_1)$ and $(x_2,y_2)$ is given by $\sqrt{{(x_2-x_1)}^2+{(y_2-y_1)}^2}$

Co-ordinates of $P(12,0)$

$\therefore$ Requried distance $=\sqrt{(12-8{)}^2+(3-0{)}^2}=5$