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A square floor with a side of 3 meters is to be covered with

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A square floor with a side of 3 meters is to be covered with [#permalink]

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New post 10 Dec 2003, 10:09
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A square floor with a side of 3 meters is to be covered with square tiles. If each tile has a perimeter of 1 meter, what is the minimum number of tiles needed to cover the floor?

3

9

12

36

144
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shubhangi

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 [#permalink]

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New post 10 Dec 2003, 10:16
edited:

if each tile has a perimeter of 1 meter, then 16 tiles will have an area of one square meter

a 3x3 floor has an area of 9 meters.


144.


And boo to the metric system.

Last edited by stoolfi on 10 Dec 2003, 10:17, edited 1 time in total.

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New post 10 Dec 2003, 10:59
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a square tile with a perimeter of 1 has a side of .25, and an area of .0625.

An even easier solution is to take the 3x3 dimensions of the floor, determine that the area is 9, and divide this number by .0625.


# of tiles needed= Area(floor)/area(tile)


144.

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Re: PS [#permalink]

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New post 13 Dec 2003, 01:46
shubhangi wrote:
A square floor with a side of 3 meters is to be covered with square tiles. If each tile has a perimeter of 1 meter, what is the minimum number of tiles needed to cover the floor?

3
9
12
36
144



cover the floor => talking about area here


area of the floor = 9 sq.m.

number of tiles req. = n * s^2 = 9


we know perimeter of tiles is 1 , therefore side is 0.25

n * 0.25 ^2 = 9

n =144

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Re: A square floor with a side of 3 meters is to be covered with [#permalink]

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New post 07 Oct 2017, 21:31
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Re: A square floor with a side of 3 meters is to be covered with   [#permalink] 07 Oct 2017, 21:31
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