The pie chart given below shows the number of boys in 8 schools. The total number of boys in all these 8 school is 10,000 . Number of boys in a particular school is shown as a percent of total number of boys in all these 8 schools.

What is the ratio of total central angle formed by sector C, D and F to the total central angle formed by sector A, G and H ?

20 : 43

Central angle formed by sector C, D and F = \(\frac{12 + 2 + 6}{100}\) × 360º

=72º

Central angle formed by sector A, G and H = \(\frac{19 + 10 + 14}{100}\) × 360º

=154.8º

Required ratio = 72 : 154.8

= 20 : 43