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WAEC Mathematics 2015 Paper

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Question : 23

Total: 45

The population of students in a school is 810. If this is represented on a pie chart, calculate the sectoral angle for a class of 72 students

32^o
45^o
60^o
75^o

Solution:

In a school with students' population 810, the sectoral angle for a class of 72 students is

=

\frac{72}{810}

x 360º

= 32º

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