Jawabanmu

2014-04-16T18:29:01+07:00
1. a=1 r= 3
    S_{6} =  \frac{a( r^{6} -1)}{r-1} = 1(728)/3-1 = 364

2. Luas Permukaan = 6.r.r
    96 = 6.r.r --> r.r = 16 r = 4
    v = 4.4.4 = 64

3.  2^{12} = 4096