Jawabanmu

2014-05-08T15:06:34+07:00
Volum = 1/3 * luas alas * tinggi = 12.544
1/3 * y * 48 = 12.544
16y = 12.544
y (luas alas) = 784cm^2.
2014-05-08T16:00:58+07:00