Jawabanmu

2014-04-17T18:40:41+07:00
1/So + 1/S1 = 1/f
1/So + 1/24 = 1/6
1/So = 1/6 - 1/24
1/So = 4/24 - 1/24
1/So = 3/24
So = 24/3
= 8 cm