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Class 7 Mathematics: questions and answers on volume

A rectangular container is 80cm long, 50cm wide and 40cm high. The container is filled with water to a level 30cm high. What is the volume of the empty space in the container?
A. 180000 $cm^3$
B. 160000 $cm^3$
C. 120000 $cm^3$
D. 40000 $cm^3$

(4m 3s)

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