Jawabanmu

2014-04-10T20:42:31+07:00
V= la.t = (jss.t/2).t =(10.7/2).t =35.25 =875
2014-04-10T20:45:50+07:00
Caranya :
 alas = (a+b)xt = (12+ 8 = 20)
20 x 7 = 140 : 2 = 70 luas alasnya x tinggi
= 70 x 25 = 1.750 [tex] cm3
2 5 2