A/b = 3/5
a = 3b/5
a = 3b/5
Luas trapesium = a + b / 2 x t
60 = (3b/5) + b / 2 x 15
4 = (3b/5) + b / 2
8 = 3b/5 +
8 = 3b/5 + 5b/5
8 = 8b/5
8b = 40
b = 5.
a = 3b/5
a = 3.5 / 5
a = 15/5
a = 3
Jadi masing-masing sisi sejajar tersebut adalah 3 dan 5.
Semoga membantu;)