Area of a triangle is given by the formula;
[tex]A=\frac{1}{2}\times b\times h[/tex]where A is the area of triangle
b is the base and h is the height.
From the question given:
b= 2 3/8 = 19/8
h= 2 1/4 =9/4
Substitute the values into the formula and evaluate.
[tex]A=\frac{1}{2}\times\frac{19}{8}\times\frac{9}{4}[/tex][tex]=\frac{171}{64}[/tex][tex]=2\frac{43}{64}\text{ square f}eet\text{ }[/tex]