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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