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

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Senior Manager
Joined: 30 Aug 2003
Posts: 314
Location: dallas , tx
A square floor with a side of 3 meters is to be covered with  [#permalink]

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10 Dec 2003, 09:09
00:00

Difficulty:

(N/A)

Question Stats:

100% (00:01) correct 0% (00:00) wrong based on 2 sessions

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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

Senior Manager
Joined: 28 Oct 2003
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Location: 55405

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Updated on: 10 Dec 2003, 09:17
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.

Originally posted by stoolfi on 10 Dec 2003, 09:16.
Last edited by stoolfi on 10 Dec 2003, 09:17, edited 1 time in total.
Senior Manager
Joined: 28 Oct 2003
Posts: 492
Location: 55405

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10 Dec 2003, 09:59
1
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.
CEO
Joined: 15 Aug 2003
Posts: 3382

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13 Dec 2003, 00:46
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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07 Oct 2017, 20:31
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Re: A square floor with a side of 3 meters is to be covered with &nbs [#permalink] 07 Oct 2017, 20:31
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# A square floor with a side of 3 meters is to be covered with

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