Respostas

2013-05-24T21:42:27-03:00

simples é só usar a fórmula direto

 

At = 2.(a.b + b.c + a.c)

At = 2.(3.6 + 3.5 + 6.5 )

At = 2.(18 + 15 + 30)

At = 2.(63)

At = 126 cm2

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2013-05-24T22:33:22-03:00

Olá !!!

 

At = 2 ( 3.6+6.5+5.3)

 

At = 2 ( 18+30+15)

 

At = 2 ( 63)

 

At = 126 cm²

 

espero ter ajudado

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