[tex]\text{Area}=32.5in^2[/tex]
Explanation
the area of a triangle is given by:
[tex]\text{Area}=\frac{base\cdot heigth}{2}[/tex]
the, to know the fabric you need, you need to finde the area
Let
base=5 in
heigth=13 inches
now, replace.
[tex]\begin{gathered} \text{Area}=\frac{base\cdot heigth}{2} \\ \text{Area}=\frac{5\text{ in}\cdot13\text{ in}}{2} \\ \text{Area}=\frac{65in^2}{2} \\ \text{Area}=32.5in^2 \end{gathered}[/tex]
I hope this helps you
