Idea: connect the two vertices on the right to get a square, then the area of the original figure is equal to the area of the square MINUS the area of the triangle.

Square area: 5× 5 = 25m2

Triangle area: 4×3÷2=6 square meters

Required graphic area: 25-6= 19 m2.

Comprehensive formula: 5×5-4×3÷2= 19 m2.