the length breadth and height of a room are 6m,5m and 4m respectively.(a) find the total surface of the room
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It is a room ,so we need to calculate the Total surface area of cuboid .
Total surface of the room=2(lb+bh+lh)
=2(6×5+5×4+6×4)
=2(30+20+24)
=2(74)=148
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