a dog
A rectangle.
A bigger square!
1 shape
-- The area of each little square is 1 square meter. -- The area of the big square is 9 square meters. -- So 9 little ones will cover the big one. Note: If the big one wasn't in the shape of a 3m x 3m square or a 1m x 9m rectangle, then you might have to cut up some of the little ones to make them fit the shape, but even so, 9 of them would exactly cover the bigger shape.
-9
Cube
Square? a cube has 6 sides each are squares.
If the squares can be placed on top of one another, they could form a shape with from 6 to 16 sides.If the squares can be placed on top of one another, they could form a shape with from 6 to 16 sides.If the squares can be placed on top of one another, they could form a shape with from 6 to 16 sides.If the squares can be placed on top of one another, they could form a shape with from 6 to 16 sides.
There is no solid shape with exactly four squares and no other faces.
A pentagon (a shape with 5 sides). Just stack the shapes ontop of eachother.
A rectangle or, if the squares are allowed to overlap it is possible to have a 16-gon ("star" shaped), 14-gon, 9-gon, 8-gon.
To achieve 9 squares with 24 toothpicks and then remove 4 while still maintaining the 9 squares, you can create a 3x3 grid of squares. Initially, the grid uses 12 toothpicks for the outer squares and 12 for the inner squares. By strategically removing 4 interior toothpicks that don't affect the overall formation of the squares, you can still keep the 9 squares intact. This approach allows you to maintain the structure while reducing the number of toothpicks used.