Mary wants to decorate her Christmas tree she wants to place the tree on a wooden block covered with coloured paper with the picture of Santa Claus on it she must know the exact quantity of paper to buy for this purpose if the box has Length breadth and height as a 80 and 40 cm and 20 CM respectively how many square sheets of paper of side 40 cm would be required??????
the ans of question must be to the point only not unreasonable ans .....
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Step-by-step explanation:
surface area of the box = 2(lb+ bh+ hl)
=2[(80*40)+(40*20)+(20*80)]
= 2[3200+800+1600]
=2*5600 =11200cm
The area of each sheet of paper= 40*40
=1600
number of sheets required= surface area of box/area of one sheet of paper
11200/1600=7
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