Answer:
l=30ft
h=10ft
Step-by-step explanation:
Area 'A' is defined as the product of length and height
[tex]A=lh=300ft^2\\h= \frac{1}{3} l[/tex]
[tex]\\300=l( \frac{1}{3}l)\\300=\frac{1}{3} l^{2}\\900=l^{2}\\30=l\\l=30ft\\\\h= \frac{1}{3}(30)\\h=10ft[/tex]
Thus, the length and the height of the wall is 30 ft and 10 ft respectively.
