Increase the polygon size by a given area

[TopMap]

I was given a task to equally increase a total polygon size of 3 ponds from 0.24ha to 0.29ha. I have tried rescaling and also manually editing the polygons but it�??s not working. Surely there must be a better way. Anyone know the magic tool?

I want to preserve the shape of these polygons so buffer won�??t work here.

Many thanks!

[MarcinGasior]

How did you rescale those polygons?
There's a hidden Scale editing tool where you can enter specific scale factor.
To access this tool click Customize menu -> Customize mode. In commands tab find Scale tool in Editor category. Drag it to some toolbar.

Next, in edit session, select polygons, click Scale tool and press F key on a keyboard. This give you an option to enter specific scale factor which in your case is 0.29/0.24 = 1.208333333