Jawabanmu

2014-05-31T19:53:39+07:00
Diagonal-diagonal dibagi 2 sama rata
pakai pitagoras  \sqrt{ 8^{2} +  6^{2}  } =  \sqrt{100} = 10 cm
sisi alas = 10 cm
volume = L alas x tinggi
L = 10 x 10 x 20 = 200 cm3
2014-05-31T19:53:50+07:00
Volume = La x t
La = 12 x 16 : 2
     = 96
V = 96 x 20
V = 1920