Hi there!
In order to find the percent of change, we need to divide 3/8 by 7/8.

Hope this helps!
Answer:
Only the floor area
has been covered
Step-by-step explanation:
Assuming that the floor of the room is rectangular, then its area is equal to the product of its length times its width.

Let's now call A 'the area that was covered with tiles.
We know that half the length was covered, then:


So:


Finally:

Could you please send a picture of the polygon?
Answer:
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