Question #bc88a

1 Answer
yumean1119
Dec 24, 2017

Four squares are needed.

Explanation:

Let #n# the number of squares to be placed.
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Then, the height of the rectangle is #10# units and its width is #10n# units.
The perimeter of the figure is #2*(10+10n)=20+20n#.

Therefore,
#20+20n=100#
#20n=80#
#n=4#.

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