Answer:
[tex]69\frac{3}{8}$ square inches[/tex]
Step-by-step explanation:
Dimensions of the Rectangle are [tex]9\frac{1}{4}$ inch by 15 inch[/tex].
If a diagonal of the rectangle forms two matching right triangles.
Area of one of the Triangle =Half of the Area of the rectangle
Therefore:
Area
[tex]=\frac{1}{2}X9\frac{1}{4}X15\\=69\frac{3}{8}$ square inches[/tex]