The plan below represents the survey of a school farm. 

Use it to answer Questions (a) and (b).

(a) Calculate the area of the land in hectares [4 marks] 70m

(b) If the school plans to cultivate plantain at a spacing of 4m x 4m on 80% of the land and pineapple at a spacing of 2m x 2.5m on 20% of the land, calculate the number of plantain and pineapple planting materials that would be required for the farm. [12 marks]