Jawabanmu

2014-05-22T14:00:45+07:00
Ae = 5 cm
be = 10 cm
cd = 7 cm
de = 6 cm

ab = ae + be =
= 5 + 10
= 15 cm

luas = (ab + cd) x de : 2
= (15 + 7) x 6 : 2
= 22 x 3
= 66 cm²
2014-05-22T14:19:00+07:00
Luas trapesium=  \frac{1}{2} jumlah sisi sejajar ×tinggi
= \frac{1}{2} (7+15)×6 = 66 cm²