In a tree plantation programme, the number of trees planted by students of different classes is given in the following table. Draw a pie diagram showing the information.

The age group and number of persons, who donated blood in a blood donation camp is given below. Draw a pie diagram from it.

The marks obtained by a student in different subjects are shown. Draw a pie diagram showing the information.

The following table shows the percentages of demands for different fruits registered with a fruit vendor. Show the information by a pie diagram.

The pie diagram in figure 6.13 shows the proportions of different workers in a town.

Answer the following questions with its help.

(1) If the total workers is 10,000; how many of them are in the field of construction?

(2) How many workers are working in the administration?

(3) What is the percentage of workers in production?