In a class of 120 students, 18 of them scored an A grade in mathematics. If the section representing the A grade students on a pie chart has angle Z^o at the centre of the circle, what is Z?

Correct answer is E

Total students = 120

grade = 18

Z^o = \(\frac{18}{120}\) x \(\frac{360}{1}\)

= 54^o

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In a class of 120 students, 18 of them scored an A grade in mathematics. If the section representing the A grade students on a pie chart has angle Zo at the centre of the circle, what is Z?