Answer :
The external dimensions of the cistern are Length = 135 cm, breadth = 108cm, depth = 90 cm.External volume = 
The internal dimensions of the cistern areLength = (135 - 5) cm = 130 cm, breadth = (108 - 5) cm = 103cmHeight = (90 - 2.5) cm = 87.5 cmThe capacity of the cistern = internal volume of the cistern
Volume of iron = external volume - internal volume
The internal dimensions of the cistern areLength = (135 - 5) cm = 130 cm, breadth = (108 - 5) cm = 103cmHeight = (90 - 2.5) cm = 87.5 cmThe capacity of the cistern = internal volume of the cisternVolume of iron = external volume - internal volumeRate this question :
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