If the box has length , breadth and height are 80 cm , 40 cm and 20 cm . Find its total surface area
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Answer:
11200
Step-by-step explanation:
total surface area of cuboid=2(lb + bh + hl)
=2(80*40+40*20+20*80)
=2(3200+800+1600)
=2(5600)
=11200
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