notes
In the previous standards, we have seen the following figures in Geography and Science. Such graphs are called pie diagrams.
In a pie diagram, the numerical data is shown in a circle. Different components of a data are shown by proportional sectors of the circle. In figure 6.8, seg OA and seg OB are radii of a circle with centre O.
∠ AOB is the central angle. The shaded region O - AXB is a sector of the circle.
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Related QuestionsVIEW ALL [28]
The following table shows the daily supply of electricity to different places in a town. To show the information by a pie diagram, measures of central angles of sectors are to be decided.
Complete the following activity to find the measure :
Places |
Supply of electricity (Thosand units) |
Measure of central angle |
Roads | 4 | `4/30 xx 360 = 48^circ` |
Factories | 12 | `square/square xx 360=144^circ` |
shops | 6 | `6/30xx360 = square` |
Houses | 8 | `square/squarexx360=square` |
Total ⇒ | 30 |
Subjectwise marks obtained by a student in an examination are given below
Subject | Marks |
Marathi | 85 |
Hindi | 85 |
Science | 90 |
Mathematics | 100 |
Total | 360 |
Draw pie diagram
The following table shows the percentages of vehicles passing a signal. Find out the measures of central angle to show the information by a pie diagram and hence draw the pie diagram.
Type of Vehicle | Bicycle | Two wheeler | Car | Bus | Rickshaw |
Percentage | 10 | 30 | 20 | 20 | 20 |
The marks obtained by a student in an examination out of 100 are given below. The total marks obtained in various subjects are as follows:
Subject | Marks |
Marathi | 85 |
English | 85 |
Science | 90 |
Mathematics | 100 |
Total | 360 |
Represent the above data using pie diagram
Area under different crops in a certain village is given below. Represent it by a pie diagram :
Corps | Area (in Hectares) |
Jowar | 80 |
Wheat | 20 |
Sugarcane | 60 |
Vegetables | 20 |