Question

For the years 2012-13 and 2013-14, value of gross domestic product at factor cost by the industry of origin is given in the following table. Present the information in the form of Pie Diagram showing differences in the percentage contribution of different sectors between the said years.

Sector	Year
	2012-13	2013-14
Primary Secondary Tertiary	17 57 26	16.7 26 57.3
Total	100	100

Answer 1

The percentage values are converted into degree values using the following formula.
$$\begin{gathered} \mathrm{Degree}\mathrm{share}=\frac{\mathrm{Percentage}\mathrm{share}}{100}\times 360 \\ =\mathrm{Percentage}\mathrm{share}\times 3.6 \end{gathered}$$

Year 2012 - 2013			Year 2013 - 2014
Sector	Percentage contribution	Degree Share	Sector	Percentage contribution	Degree Share
Primary	17	$17\times 3.6=61.2°$	Primary	16.7	$16.7\times 3.6=60.12°$
Secondary	57	$57\times 3.6=205.2°$	Secondary	26	$26\times 3.6=93.6°$
Tertiary	26	$26\times 3.6=93.6°$	Tertiary	57.3	$57.3\times 3.6=206.28°$

Analysing the above diagram, we can conclude that in 2012-13 it is the secondary sector that contributed the most to GDP, on the other hand, in 2013-14, it is tertiary sector that contributed the most to GDP.