Electricity used by farmers during different parts of a day for irrigation is as follows:

4. Electricity used by farmers during different parts of a day for irrigation is as follows:
Part of a day
Morning
Afternoon
Evening
Night
Percentage of electricity used
30
40
20
10


Part of a day
Percentage of electricity used
Measure of the central angle
Morning
30
(30÷ 100) × 3600 = 1080
Afternoon
40
(40÷ 100)× 3600 = 1440
Evening
20
(20÷ 100)× 3600 = 720
Night
10
(10÷ 100)× 3600 = 360
Total
100
3600



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