Apparently, you didn't get all of the answers. We suggest that you look over the explanation again and retry. But in any case, here they are:
1) 10000 (Make sure you don't have any commas!)
2) 31416 (Again, commas aren't allowed)
3) .0625 (Do you have the decimal point in the right place?)
4) 113.1 square meters
5) 144
6) 10
7) 121

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