Respostas

2014-04-06T20:06:13-03:00
Olá, belezinha?

Ab =  5 x 4 = 20
Al = 3 x 5 x 2 + 3 x 4 x 2 = 30 + 24 = 54

At = 2 . Ab + AL
At = 40 + 54
At = 94 cm²

1 m² ----- 1000 cm²
x -------- 94

94 = 1000x
x = 0,094 m²

Belezinha?