The formula for finding the central angle of each given data to draw a pie graph is
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In any sector, there are 3 parts to be considered:
The arc length is a fraction of the circumference. The sector area is a fraction of the whole area. The sector angle is a fraction of 360°
If the sector is 20% of the pie chart, then each of these parts is 20% of the whole.
20%×360°
20100×360=72°
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