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2014-04-28T21:58:23+07:00
V limas = 1/3 luas segitiga x t
360 = 1/3 x 15x8/2  x t
360=20t
t=360/20=18cm
2014-04-28T21:59:00+07:00
L.alas=1/2.a.t= 1/2.15.8 =60 cm kuadrat V=1/3.la.t 360=1/3.60.t 20t=360 t= 18 cm