In the pie chart representing the percentages of students having interest in reading various kinds of books, the central angle of the sector representing students reading novels is `81^@` .What is the percentage of students interested in reading novels ?

If in the pie chart representing the number of students opting for different streams of study out of a total strength of 1650 students , the central angle of the sector representing arts students is 48^@ then what is the number of students who opted for arts stream ?

What is the central angle of the sector in the pie chart representing skin and bones together?

What is the central angle of the sector in the pie chart representing hormones enzymes and other proteins.

In the given pie chart what is the central angle of the sector representing the number of employees in the department D?

In the given pie-chart, what is the central angle of the sector representing the number of employees in the department D?