Considere o retanglo abaixo e dtermine: llllllllllllllllllllllllllllllllllllllllll llllllllllllllllllllllllllllllllllllllllll x llllllllllllllllllllllllllllllllllllllllll <----ISSO E UM RETÂNGULO TAH? '-' llllllllllllllllllllllllllllllllllllllllll 35
a)o perimetro dele em funcao de x b)o perimetro para x=12.5 c)o valor de x para que se tenha f(x)=90