The pie-chart given in Fig. 25.18 shows the annual agricultural production of an Indian state.

(i) Production of wheat $=\frac{\text { Central angle for wheat } \times \text { Total production }}{360^{\circ}}$

$=\frac{120^{\circ} \times 81000}{360^{\circ}}=27000$ tonnes

(ii) Production of sugar $=\frac{\text { Central angle for sugar } \times \text { Total production }}{360^{\circ}}$

$=\frac{10^{\circ} \times 81000}{360^{\circ}}=22500$ tonnes

(iii) Production of rice $=\frac{\text { Central angle for Rice } \times \text { Total production }}{360^{\circ}}$

$=\frac{60^{\circ} \times 81000}{360^{\circ}}=13500$ tonnes

(iv) Production of maize $=\frac{\text { Central angle for maize } \times \text { Total production }}{360^{\circ}}$

$=\frac{30^{\circ} \times 81000}{360^{\circ}}=6750$ tonnes

(v) Production of gram $=\frac{\text { Central angle for } \operatorname{Gram} \times \text { Total production }}{360^{\circ}}$

$=\frac{120^{\circ} \times 81000}{360^{\circ}}=11250$ tonnes