Respostas

2013-06-05T13:54:41-03:00

(2x-3)+(x+2)+x = 100
2x-3+x+2+x = 100
4x - 1 = 100
4x = 100 + 1
x = 101 : 4
x = 25,25 cm²

2x-3 = ?
2.(25,25) - 3 = ?
50,5 - 3 = 47,5 cm² (Base maior)

x+2
25,25 + 2 = 27,25cm² (Base menor)

2 5 2