Jawabanmu

2014-01-15T11:27:11+07:00
Berat air = berat kayu basah -kayu kering
= 10-8 =2 kg
persentase kandungan air = berat air / berat kayu basah x 100%
= 2/10x 100%
= 0,2x 100%
=20 % :)
2014-01-15T12:29:34+07:00
Kandungan air = 10-8=2kg
persentase=  \frac{2}{10} x 100% = 20%