JAMB - Mathematics (1985 - No. 39)
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?
15
27
50
52
54
Uitleg
Total students = 120
grade = 18
Zo = \(\frac{18}{120}\) x \(\frac{360}{1}\)
= 54o
grade = 18
Zo = \(\frac{18}{120}\) x \(\frac{360}{1}\)
= 54o