Gardens

I have a garden in the shape of a square with a side length of 0.02 kilometers. Neighbor has a large garden as well and one side of the garden we share. I'd bought from a neighbor garden that my area of my garden increased to 5 ares.
a/ By how many acres I bought from neighbor?
b / how many meters will move my fence towards into a neighbors garden if I bought it?

Result

a =  1 a
b =  5 m

Solution:

Solution in text a =
Solution in text b =







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