Answer :
We are told that we have a triangle of height h = 1 yd and an area of 2.5 squared yds and asked to find its base's length.
To do so, recall that the formula of the area of a triangle of height h and base b is
[tex]A=\frac{b\cdot h}{2}[/tex]in our case, we have A = 2.5 and h = 1 . Then we have
[tex]2.5=\frac{b\cdot1}{2}[/tex]If we multiply both sides by 2, we get
[tex]b=2.5\cdot2=5[/tex]so the height of the triangle is 5 yd