Respostas

2014-02-19T19:41:41-03:00
2014-02-19T19:46:25-03:00
A distância entre P e Q é 
d² = (Px - Qx)² + (Py - Qy)² 

AB² = (Ax - Bx)² + (Ay - By)² = (1 - 3)² + (1 - -2)² = 4 + 9 = 13 
AC² = (Ax - Cx)² + (Ay - Cy)² = (1 - 5)² + (1 - 0)² = 16 + 1 = 17 
BC² = (Bx - Cx)² + (By - Cy)² = (3 - 5)² + (-2 - 0)² = 4 + 4 = 8 

p = √13 + √17 + √8 = 10,55708