Jawabanmu

2014-03-16T19:22:11+07:00
Pertanyaan nya mana???

2014-03-16T19:32:28+07:00
L 1 = 1/2 x a x t = 1/2 x 4 x 3 = 6 cm
a= alas bagian atas diperpanjang

L 2 =1/2 x a x t = 1/2 x 8 x 4 = 16 cm

L. total = 22 cm