Question

(mackenzie-sp)na figura.se AB =5.(AD)=5.(FB).

a razao FG/DE vale:
CALCULO POR FAVOR

Answer 1

Dado:AB= 5.AD=5.FB

Chamaremos AD=x FB= y

5x = 5y

x=y

AB= 5.x

Calculando DF

AB= AD + DF + FB

AB= x + DF + x

AB = 2x+ DF

5x-2x= DF = 3x

$\frac{AF}{AD} =\frac{FG}{DE} \\ \\\frac{4x}{x}=\frac{FG}{DE}\\ \\\frac{FG}{DE} = 4$

R: Letra b)