It's undefined, because we dont know the shape of the figure. If it's a square, the perimeter is 12.. if its a rectangle the perimeter MIGHT be 20... We cant determine if we dont know the figure.
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9 sq cm
3 x 9
Depends on the shape. A square's perimeter would be 4 root 9 ie 12 cm, but you could have a 9 x 1 rectangle which would have a perimeter of 20 cm etc etc
81 sq cm, for a 9 cm * 9 cm square
Height is length and base is width. Therfore, width is 9 (cm) and length is 4 (cm) which gives us an area of 36 cm sq.