Answer:
Option 4
Step-by-step explanation:
Let us consider all options;
Option 1 : Here it states that the four triangles of the first figure can fill the rectangular part of the figure. First consider if this is possible. Neglecting the dimensions, the 4 triangles could still not fit into the rectangle, provided it would require a 5th triangle with it's size.
Option 2 : The two triangles of the first figure can be moved to the shorter ends of the same rectangle in the figure. Now the length of this shorter side of the rectangle is 6 cm, whereas the bases of these two triangles are each 4 cm, so they will not fit perfectly
Option 3 : The two bottom triangles can be rotated such that they match with the shorter length of the rectangle in the same figure. Afterwards that of the other two triangles align to create a rectangle inside this rectangle. Now a rectangle could be created through this, but will most certainly not create a larger rectangle with dimensions 8 by 9 meters
Option 4 : Two bottom triangle can be moved to the two top triangles to create a rectangle, all - in - all a bigger rectangle with dimensions 8 by 9 meters. This is true. If we were to place the bottom triangles on either side of the two top triangles, reversed, it would create a rectangle with dimensions 3 by 8 meters. If you take a look at the whole figure, the other rectangle is elongated by 3 meters, such that it has dimensions 8 by 9 meters.