Changing perimeter

This task is about perimeter and area of shapes.
A farmer plants 11 square plots with seedlings for hedges. Each plot has at least one side in common with another plot. The farmer wants to protect the seedlings with a deer-proof fence, right around the perimeter of the 11 plots.
 
a) Draw 3 different arrangements for the 11 plots in the box below.
One is already drawn for you, draw 3 more.
 
 
Example:
i)
 
 
 
 
 
 
ii) iii)
 
 
 
 
 
 
 
b)
 
Draw an arrangement that has the shortest possible perimeter in the box below.
 
 
 
 
 
 
 
 
 
 
 
c)
 
Draw an arrangement that has the longest possible perimeter in the box below.