Question

calcule a distancia entre o ponto A (2,1) e B (4,1)

Answer 1

Explicação passo-a-passo:

$d = \sqrt{(x2 - x1) {}^{2} + (y2 - y1) {}^{2} }$

$d = \sqrt{(4 - 2) {}^{2} + (1 - 1) {}^{2} } = \sqrt{2 {}^{2} + 0 {}^{2} } = \sqrt{4} = 2$

Answer 2

$\large\boxed{\begin{array}{l} \sf{d_{AB } = \sqrt{(x_{A} - x_{B}) {}^{2} + (y_{A} -y_{B}) {}^{2} } } \\ \\ \sf {d_{AB } = \sqrt{(2 - 4) {}^{2} + (1 - 1) {}^{2} } } \\ \\ \sf{d_{AB } = \sqrt{ (- 2) {}^{2} + 0 {}^{2} } } \\ \\ \sf{d_{AB } = \sqrt{4 + 0} } \\ \\ \sf{d_{AB } = \sqrt{4 \: } } \\ \\ \boxed{ \huge \boxed { \huge\boxed{ \huge\boxed{ \huge\sf{d_{AB } = 2}}}}} \huge \checkmark\end{array}}$