[填空题]
Peter has two water tb .:fy5f)l h9q khgud5anks witwwd7r8ct8fof6g3 j. q h goldfish inside. The first tank is in the shape of a cylinder with diameter 4040 cm and height 45 cm. The second tank is in qf38wowf td67.rcg8jthe shape of a cuboid with length 40 cm, width 32 cm, and height 42 cm.
1.Calculate the volume, giving your answer in $cm^3$ correct to three significant figures,
1.of the first water tank; $cm^3$
2.of the second water tank. $cm^3$
Each goldfish requires $15000 cm^3$ of fresh water for a comfortable life.
2.Calculate the number of goldfish Peter can safely put into his tanks. goldfish
