Age group (in years)No. of PersonsMeasure of central angle - Algebra

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Chart
Age group
(in years)
No. of Persons Measure of central angle
20 - 25 80 `square/200 xx 300 = square`
25 - 30 60 `60/200 xx 360 = square`
30 - 35 35 `35/200 xx square = 63^circ`
35 - 40 25 `25/200 xx 360 = square`
Total 200 `square`
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Solution

Age group
(in years)
No. of Persons Measure of central angle
20 - 25 80 `80/200 xx 300 = 144^circ`
25 - 30 60 `60/200 xx 360 = 108^circ`
30 - 35 35 `35/200 xx 360 = 63^circ`
35 - 40 25 `25/200 xx 360 = 45^circ`
Total 200 360°
Concept: Concept of Pie Graph (Or a Circle-graph)
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