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

Time alloted for the preparation of an examination by some students is shown in the the table. Draw a histogram to show 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 .

On an environment day, students in a school planted 120 trees under plantation project. The information regarding the projects is shown in the following table. Show it by a pie diagram.

Draw a pie diagram to represent the world population given in the following table after determining the value of a .

The time required for students to do a science experiment and the number of students is shown is the following grouped frequency distribution table. Show the information by a histogram and also by a frequency polygon.

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

The following table shows causes of noise pollution. Show it by a pie diagram .

Following is the breakup of expenditure of a family on different times of consumption. Draw a pie diagram of the above data.