The pie chart given in the figure shows the annual agricultural production of an Indian state. If the total production of all the commodities is 81000 tonnes, then find the production of sugar:

The circle represents the total agricultural production. 
Therefore, the production of sugar will be proportional to the central angle of sugar.

Production of sugar = $\frac{(\mathrm{Central} \mathrm{angle} \mathrm{of} \mathrm{sugar}\times \mathrm{Total} \mathrm{production})}{360°}$

$\frac{=(100°\times 81000)}{360°}$

= 22500 tonnes 

Hence, the production of sugar will be 22500 tonnes.