1.

The age groups and the number of persons in the age groups, who donated blood in blood donation camp is given below. Find the measures of central angles to show the information by a pie diagram.Age group (Years)20-2525-30 30-3535-40No of persons80603525

Answer»
Age Group (Yrs.)No. of personsMeasure of central angle
20-258080 / 200 x 360 =144o
25-306060 / 200 x 360 =108o
30-353535 / 200 x 360 = 63o
35-402525 / 200 x 360 = 45o
Total200



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