Answers

2016-03-21T15:58:07+08:00
Vol of tank   =   πr²h    =   π (0.6)² 5
vol of water   =   7/8 π (0.6)² . 5
   let h  = depth of water when the tank is placed vertically
  thus    π (0.6)² h  =   7/8 π(0.6)² .5
             h  =   7/8 π(0.6)² .5/ π(0.6)²
                  =   7/8 .5 =   4.375m
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