Data collected in a survey shows that 40% of the buyers are interested in buying a particular brand of toothpaste. The central angle of the part of the pie chart representing this information is
A
145∘
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B
40∘
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C
128∘
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D
144∘
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Solution
The correct option is D144∘ Required central angle=percentage of buyers100×360∘ 40100×360∘=25×360∘=144∘
The central angle of the sector of the pie chart representing this information is 144∘.