Question

find the distance between A(2 3) and b(0 1)

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Answer 1

$A(2 \: \: 3) \: and \: b(0 \: \: 1) \\ \\ distance \: formula \\ \sqrt{(x 2 - x1 ) {}^{2} + ( {y} 2 -y1) {}^{2} } \\ = \sqrt{(0 - 2) {}^{2} + {(1 - 3)}^{2} } \\ = \sqrt{ {( - 2)}^{2} + {( - 2)}^{2} } \\ = \sqrt{4 + 4} \\ = \sqrt{8} \: units \: \: \: \\ or \: \\ = 2 \sqrt{2} \: units$