Jambmaths question:
|
Age in years |
7 |
8 |
9 |
10 |
11 |
|
No of pupils |
4 |
13 |
30 |
44 |
9 |
The table above shows the number of pupils in a class with respect to their ages. If a pie chart is constructed to represent the age, the angle corresponding to 8 years old is
Option A:
48.6°
Option B:
56.3°
Option C:
46.8°
Option D:
13°
Jamb Maths Solution:
Total number of pupils = 4 + 13 + 30 + 44 + 9 =100
That is 100 is equivalent to 360o
The angle of sector for those whose ages are 8 is $\frac{13}{100}\times 360{}^\circ =46.8{}^\circ $
Jamb Maths Topic:
Year of Exam: