martamsballet
16.07.2019 •
Mathematics
The area of a square is 81 in 2. what is the perimeter of the square
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Ответ:
Ответ:
Lets Reduce:
21/7=3 so we know for every 3 in 18/21 we have one in x/7
This means 6/7=18/21
Check:
18/6=3
21/7=3