12. Five marks example problem II

The floor of a hall is covered with identitcal tiles which are in the shapes of triangles. One such triangle has the vertices \((-3,2)\), \((-1,-1)\) and \((1,2)\). If the floor of the hall is completely covered by \(110\) tiles, find the area of the floor.

 

 

Answer:

 

Area of the tile \(=\)  \(sq. \ units\)

 

Area of the floor \(=\)  \(sq. \ units\)