Hello,
Can anyone tell me how to buffer a polygon by area? 
I have a simple (no-holes and only one feature) polygon shapefile in an equal area projection and I need to buffer it to extend the boundaries so that the resulting polygon is 10% bigger by area. I know how to buffer by a fixed distance using the rgeos package but I will have to repeat this process across many different shapefiles that are of different sizes and a fixed buffer does not make sense in my case. 
Thanks in advance for the help!
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