Question

Distance between the points $P\left(x_1,y_1\right)$ and $Q\left(x_2,y_2\right)$ is

• A. $\left(x_2-x_1\right)+\left(y_2-y_1\right)$
• B. ${\left(x_2-x_1\right)}^2+{\left(y_2-y_1\right)}^2$
• C. $\sqrt{{\left(x_2-x_1\right)}^2+{\left(y_2-y_1\right)}^2}$
• D. $\sqrt[3]{{\left(x_2-x_1\right)}^2+{\left(y_2-y_1\right)}^2}$

Answer 1

Answer: (C)

Distance between the points $P\left(x_1,y_1\right)$ and $Q\left(x_2,y_2\right)$ is
$\sqrt{{\left(x_2-x_1\right)}^2+{\left(y_2-y_1\right)}^2}$.