Respostas

2014-04-24T00:37:36-03:00
P= (a+b+c)/2
p=(27,6+25,8+21,2)/2
p= 37,3m

a=√37,3.(37,3-27,6).(37,3-25,8).(37,3-21,2)
a=√37,3.(9,7).(11,5).(16,1)
a=258,82 m²