1.  To show the distribution of proteins and other dry elements in the human body, the arc of the circle should subtend at the centre an angle of :

A. 54º
B. 126º
C. 108º
D. 252º

Answer: Option C

Explanation:

Percentage of proteins and other dry elements in the body

=(16% + 14%)

= 30%

Central angle corresponding to proteins and other dry elements together

= 30% of 360º

= 108º.