Question

Determine a distância entre os pontos A(1,1) e B(5,4)

Answer 1

$\large \boxed{ \begin{array}{l} \sf{d_{AB} = \sqrt{(x_A - x_B) {}^{2} + (y_A - y_B) {}^{2} } } \\ \\ \sf{d_{AB} = \sqrt{(1 - 5) {}^{2} + (1 - 4) {}^{2} } } \\ \\ \sf{d_{AB} = \sqrt{( - 4) {}^{2} + ( - 3) {}^{2} } } \\ \\ \sf{d_{AB} = \sqrt{16 + 9} } \\ \\ \sf{d_{AB} = 25} \\ \\ \boxed{ \boxed{ \sf{d_{AB} = 5}}}\end{array}}$