Jawabanmu

2014-02-08T11:07:07+07:00
2014-02-08T11:13:00+07:00
S1= a = 16 S3 = ar² = 36 r²= 36/16 r²= 2.25 r= 1.5 S5= ar^4 S5= 16 x 1.5^4 = 16 x 5.0625 = 81