Given sides of triangle is: 2 yards, 3 yards and and 4 yards
[tex]\begin{gathered} s=\frac{a+b+c}{2} \\ s=\frac{2+3+4}{2} \\ s=4.5 \end{gathered}[/tex]Now the area is:
[tex]\begin{gathered} A=\sqrt[]{s(s-a)(s-b)(s-c)} \\ A=\sqrt[]{4.5(2.5)(\text{1}.5)(0.5)} \\ A=2.90\text{ square yards} \end{gathered}[/tex]nowconvert squareyard to square foot
2.90 square yeard = 26.1 square feet
five plants per square foot then in 26.1 square foot:
[tex]26.1\times5=130.5[/tex]