Question

What is the measure of the distance?

Answer

The measure of the distance between points A and B which can be written as AB. For example-
$\mathrm{the\; coordinates\; of }P\left(x_1,y_1,z_1\right)\mathrm{ and }Q\left(x_2,y_2,z_2\right)\mathrm{ are\; given\; then\; distance\; or\; length\; if\; PQ\; is}$
$\mathrm{PQ}=\sqrt{{\left(x_2–x_1\right)}^2+{\left(y_2–y_1\right)}^2+{\left(z_2–z_1\right)}^2}$
$\mathrm{Distance\; of\; the\; point\; P}\left(\mathrm{x,\; y,\; z}\right)\mathrm{ from\; the\; origin }\left(\mathrm{0,\; 0,\; 0}\right)\mathrm{ is\; given\; by}$
$\mathrm{OP}=\sqrt{x^2+y^2+z^2}$

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