[計量] Three solid cubes of lead, ...
Three solid cubes of lead, each with edges 10 centimeters long,
are melted together in a level, rectangular-shaped pan.
The base of the pan has inside dimensions of 20 centimeters by 30
centimeters,
and the pan is 15 centimeters deep.
If the volume of the solid lead is approximately the same as the volume of
the molted lead, approximately how many centimeters deep is the melted lead
in the pan?
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