Respostas

2014-03-20T07:38:46-03:00
A melhor resposta!
2014-03-20T08:56:20-03:00
Dab= √(-1-2)² + √(2-6)²
Dab= √2² + √4²
Dab= √4 + √16
Dab= √20

Dbc=√(2-5)² + √(6-2)²
Dbc= √3² + √4²
Dbc= √25
Dbc=5

Dac= √(5-(-1))² + √(2-2)²
Dac= √6² + 0
Dac= √36
Dac= 6

√20 + 5 + 6
1 5 1