Question

Observe a figura, quanto mede o segmento AC?

Answer 1

AB = x
x/(7+8) = 4/8
x/15 = 4:4/8:4
x/15 = 1/2
2x = 15
x = 15/2
x = 7,5
AB = 7,5
AC = y
y² = 15²+(7,5)²
y² = 225+56,25
y² = 281,25
y ~ 16,77
AC ~ 16,77