Marry wants to decorate her Christmas tree . She wants to
place the tree on a wooden block covered with coloured paper
with 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 80 cm, 40 cm and 20 cm respectively. How
many square sheets of paper of side 40 cm would she require?
• A. 7
• B. 5
• C. 4
• D. 8
DON'T SPAM I WILL REPORTED YOUR 20 ANSWER
Answers
Answer:
d,is the answer
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Answer:
Given that mary wants to paste the paper on the outer surface of the box. The quantity of the paper required would be equal to the surface area of the box which is of the shape of cuboid. The dimension of the box are
Length l=80 cm
Breath b=40 cm
Height h=20 cm
Surface area of the box =2[lb+bh+hl]
=2[80×40+40×20+20×80]
=2×5600
=11200 cm
2
Area of each sheet of paper =40×40
=1600 cm
2
∴ Number of sheets required =
1600
11200
=7
Explanation:
I hope it is Right answer