Jawabanmu

2014-03-13T19:18:43+07:00
10800 J
1 x 12 x 1800 : 4 x 2 = 10800 Joule
2014-03-13T19:29:50+07:00
1 x 12 x 1800 : 4 x 2 = 10800 Joule