Respostas

  • Usuário do Brainly
2014-05-29T16:17:27-03:00
A(r)=x.y
A(c)=x.y -x.y/2 - x/2.y/2 .1/2
A(c)=x.y/2 - x.y/8
A(c)=8xy-2xy/16
A(c)=6xy/16
A(c)=3xy/8

A(c)/A(r)

3xy/8xy =3/8 (B)