SOLUTION: Thomas has an enormous stamp collection. He has wallpapered one wall of his house with stamps that are square with sides that are one and one-quarter inches long. How many stamps w

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Question 319759: Thomas has an enormous stamp collection. He has wallpapered one wall of his house with stamps that are square with sides that are one and one-quarter inches long. How many stamps were used to cover the wall, which is 10 feet tall and
25 feet long?
Found 2 solutions by Alan3354, mananth:
Answer by Alan3354(69443) (Show Source):
You can put this solution on YOUR website!
Thomas has an enormous stamp collection. He has wallpapered one wall of his house with stamps that are square with sides that are one and one-quarter inches long. How many stamps were used to cover the wall, which is 10 feet tall and 25 feet long?
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Assuming all the area of the wall is covered:
The area of the wall is 10*25 = 250 sq feet = 250*144 sq inches
Wall area = 36000 sq inches
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Stamp area = 1*1.25
# of stamps = 36000/1.25
= 28800 stamps

Answer by mananth(16946) (Show Source):
You can put this solution on YOUR website!
Number of stamps stuck = area of wall / area of stamp
area of wall = (10*12 )*(15*12) inches
= 21600 square inches.
..
Area of stamp = 1*1.25 square inches
..
21600/1.25
= 17,280 stamps