GEOGRAPHY PRACTICAL :- PIE DIAGRAM


PROPORTIONAL PIES

•SOURCE :- The pie (π) from Greek alphabet has been used here to indicates the circularity of the diagram because pie is considered as the ratio between the circumstances and diameter of a circles.

• PRINCIPLE :- Various types of data representing a whole and its components can be representing in Pie - Diagram. The distribution of  divisions into total is represented by following the principal of this diagram.

• Calculation for the radius  of the circles :- πr² = x( here x is area or population to be represented)
r = √x/π

• CALCULATION FOR ANGULAR VALUE :- Various components are shown by the angular value of the circle. θ = (360°/ total value) × individual components item.

• USE :- Land use, production of various crops and quantity of various minerals, various components of population ( male,female) are shown by this diagram and we can compare between various components.




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