Variety of Perimeters with Fixed Area

Drag each of the following numbers of squares together so that they are all touching side by side. Record the possible perimeters of the figures obtained in the table. (a) 3; (b) 4; (c) 5; (d) 6; (e) 7; (f) 8; (g) 9.
Anthony Or. GeoGebra Institute of Hong Kong.