Answer:
I think your forgot to add some parts of this question, because you can't do anything with this except simplify it down a little maybe. But, I will provide the simplified version of this.
=
Step-by-step explanation:
Hope this helped!
20m
Area of garden = 400m²
Area = L² = 400m²
L = √400m²
L = 20m
Hope this helps!
identical in form or shape
two triangles could be congruent as they both have 3 sides.