Respostas

2013-09-20T20:31:10-03:00
2013-09-20T20:32:29-03:00
 x^{2} =  4^{2}+ 3^{2}
 x^{2} =16+9
 x^{2} =25
x= \sqrt{25}
x=5
do ponto A ate o C  tem 5 m