Question

Calcule a distância entre os pontos P( 1,1) e B (1,4) ???

Answer 1

$P(1,1)~~~e~~~B(1,4) \\ \\ d_{PB}= \sqrt{(x_B-x_P)^2+(y_B-y_P)^2 } \\ \\ d_{PB}= \sqrt{(1-1)^2+(4-1)^2} \\ \\ d_{PB}= \sqrt{0^2+3^2} \\ \\ d_{PB}= \sqrt{9} \\ \\ d_{PB}=3$

Answer 2

$\large \boxed{ \begin{array}{l} \sf{d_{P,B} = \sqrt{(1 - 1) {}^{2} + (1 - 4) {}^{2} } } \\ \\ \sf{d_{P,B} = \sqrt{0 {}^{2} + ( - 3) {}^{2} } } \\ \\ \sf{d_{P,B} = \sqrt{0 + 9} } \\ \\ \sf{d_{P,B} = \sqrt{9} } \\ \\ \boxed{\sf{d_{P,B} = 3}} \blue{ \checkmark}\end{array}}$