The favourite flavours of ice-creams for students of a school is given in percentages as follows.
|Flavours||Percentage of students Preferring the flavours|
|Other flavours||25 %|
Let us represent this data in a pie chart.
The total angle at the centre of a circle is 360°. The central angle of the sectors will be a fraction of 360°. We make a table to find the central angle of the sectors .
|Flavours||students in preferring the flavours||In fractions||Fraction of 360°|
|Chocolate||50 %||`50/100 = 1/2`||`1/2` of 360° = 180°|
|Vanilla||25 %||`25/100 = 1/4`||`1/4` of 360° = 90°|
|Other flavours||25 %||`25/100 = 1/4`||`1/4` of 360° =90°|
1. Draw a circle with any convenient radius. Mark its centre (O) and a radius (OA). (fig.)
2. The angle of the sector for chocolate is 180°. Use the protractor to draw ∠AOB = 180°. (fig.)
3. Continue marking the remaining sectors.
Shaalaa.com | Drawing Pie Charts 1
The adjoining pie chart gives the marks scored in an examination by a student in Hindi, English, Mathematics, Social Science and Science. If the total marks obtained by the students were 540, answer the following questions.
1) In which subject did the student score 105 marks?
(Hint: For 540 marks, the central angle = 360°. So, for 105 marks, what is the central angle?)
2) How many more marks were obtained by the student in Mathematics than in Hindi?
3) Examine whether the sum of the marks obtained in Social Science and Mathematics is more than that in Science and Hindi.
(Hint: Just study the central angles)
The number of students in a hostel, speaking different languages is given below. Display the data in a pie chart.
|Number of students||40||12||9||7||4||72|
Employees of a company have been categorized according to their religions as given below:
|Number of workers||420||300||225||105||1080|
Draw a pie-chart to represent the above information.
In one day the sales (in rupees) of different items of a baker's shop are given below:
|Items||Ordinary bread||Fruit bread||Cakes and Pastries||Biscuits||Others||Total|
|Sales (in Rs)||260||40||100||60||20||480|
Draw a pie-chart representing the above sales.
The following data shows the expenditure of a person on different items during a month. Represent the data by a pie-chart.
|Items of expenditure||Rent||Education||Food||Clothing||Others|
|Amount (in Rs)||2700||1800||2400||1500||2400|
The percentages of various categories of workers in a state are given in the following table.
|Categoies||Culti-vators||Agricultural Labourers||Industrial Workers||Commercial Workers||Others|
|% of workers||40||25||12.5||10||12.5|
Present the information in the form a pie-chart.
The following table shows the expenditure incurred by a publisher in publishing a book:
Present the above data in the form of a pie-chart.