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Distance Formula

Calculate the...

Question

Calculate the distance between the points $P (2, 2)$ and $Q (5, 4)$ correct to three significant figures.

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Solution

$P Q = \sqrt{{(5 - 2)}^{2} + {(4 - 2)}^{2}} = \sqrt{9 + 4} = \sqrt{13} = 3.6055 = 3.61 u n i t s$

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