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If L is total length of a canal in kilometers, P is total perimeter of its lining in metres and C is the cost of lining per square metre, the additional expenditure involved on lining, is
Magnesite bricks are used in those parts of furnaces, which are
Silica bricks are never used for lining the
Carbon bricks are not used in the lining of the
Alumina-graphite bricks are used for lining the
Fireclay bricks is not used for lining the