Respostas

2013-06-18T14:24:46-03:00

At=b.h/2

18=6.h/2

6h=36

h=6m

 

7,2.2/3

14,4/3

h=4,8cm

 

então: At=b.h/2

At=7,2.4,8/2

At=34,56/2

At=17,28

2 5 2