Jawabanmu

2015-12-29T13:41:21+07:00
A : t = 6 : 5
maka
a = 6x
t = 5x

luas = a . t / 2
135 = 6x . 5x / 2
270 = 30x²
x² = 9
x = 3

maka
a = 6(3) = 18 cm
t = 5(3) = 15 cm