The approximate height of a blast furnace having a useful volume of 20

1.	The approximate height of a blast furnace having a useful volume of 2000 m3 is about _______________ metres ?
A.	25
B.	35
C.	55
D.	75
Answer» D. 75

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The approximate height of a blast furnace having a useful volume of 2000 m3 is about _______________ metres ?

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