Answer:
Hence the dimensions are 5×5 i.e. 5 meters and 5 meters such that its field would be as large as possible.
Step-by-step explanation:
Darek's dad has a 20 m fencing mesh.
Since we have to make a rectangular garden with he help of fencing the garden using this mesh, that means perimeter of this garden is 20 m.
i.e. 2( l+b)=20
also we have to fenced in such a way that its field would be as large as possible.
ie. it has the largest Area.
Now we will start from the dimensions possible as:
9×1 whose area will 9 m^2 (since Area=l×b)
Next dimension will be:
8×2 whose area will be 16 m^2
Next will be:
7×3 whose area will be 21 m^2
Next will be:
6×4 whose area will be 24 m^2
Next will be:
5×5 whose area will be 25 m^2
Next will be:
4×6 whose area will be same as of 6×4.
Hence, we get the maximum area to be 25 m^2 which is obtained when the dimensions are 5×5.
multiplied by 
