Jawabanmu

2014-05-25T11:22:17+07:00
1.V=p*l*t
     =12cm*9cm*17cm
     =108cm²*17cm
     =1.836cm³
2.V=1/2*a*t*t
     =1/2*5dm*12dm*1m
     =5dm*6dm*1m
     =30dm²*1m
     =30dm²*10dm
     =300dm³
     =300l
     =300.000ml
   t=V/d
    =300.000ml/30ml/s
    =30.000s
3. maaf belum faham soalnya

Semoga Membantu :)