The plan below represents the survey of a farm. Use it to answer questions (a) and  (b).

(a)  Calculate the area of the farmland.                                   

(b)  If the farmland is planted with banana at a spacing of 4 m x 4 m, what will be the population of banana plants on the farm?                   

(c)  Study the diagrams labelled I and II below and answer the questions that follow.

 

 

(i)   Name the tools labelled I and II.                                                                           
(ii)  State two uses of each of the tools labelled I and II.                                                 

(iii)  State one general way of maintaining the tools labelled I and II.