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Question
Observe the adjacent pie diagram. It shows the percentages of number of vehicles passing a signal in a town between 8 am and 10 am. Find central angle for cars.
Sum
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Solution
Given: Cars = 30% of the pie (percentage from the diagram).
Central angle = `("Percentage")/100 xx 360^circ`
= `30/100 xx 360^circ`
= 0.30 × 360°
= 108°
The central angle for cars is 108°.
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