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.
Shaalaa.com | How to Draw a Pie Chart
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 :
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`|
Subjectwise marks obtained by a student in an examination are given below
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|
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:
Represent the above data using pie diagram
The annual investments of a family are shown in the adjacent pie diagram. Answer the following questions based on it.
(1) If the investment in shares is Rs 2000/, find the total investment.
(2) How much amount is deposited in bank ?
(3) How much more money is invested in immovable property than in mutual fund ?
(4) How much amount is invested in post ?
The following pie diagram represents the sectorwise loan amount in crores of rupees distributed by a bank. From the information answer the following questions :
a. If the dairy sector receives `20 crores, then find the total loan disbursed.
b. Find the loan amount for agriculture sector and also for industrial sector.
c. How much additional amount did industrial sector receive than agriculture sector?
Area under different crops in a certain village is given below. Represent it by a pie diagram :
|Corps||Area (in Hectares)|