Pie Chart_Lesson

Central Angle of Component
(CAC)

𝐂𝐀𝐂 = 𝐅𝐫𝐚𝐜𝐭𝐢𝐨𝐧 × 𝟑𝟔𝟎°

𝐕𝐚𝐥𝐮𝐞 𝐨𝐟 𝐂𝐨𝐦𝐩𝐨𝐧𝐞𝐧𝐭

𝐓𝐨𝐭𝐚𝐥 𝑽𝒂𝒍𝒖𝒆 𝒐𝒇 𝒄𝒐𝒎𝒑𝒐𝒏𝒆𝒏𝒕𝒔

​𝐅𝐫𝐚𝐜𝐭𝐢𝐨𝐧=

Favourite Fruit

Number of
Students

CAC =
Fraction x 360°

Mango

18

Pineapple

9

Grapes

🍇

6

Orange

🍊

3

Total Students

Problem

Solving

:

CAC

Grade VIII were asked about there favourite fruit

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in degree

What is the Central Angle of the
given Pie Chart?

Income

How will you represent Income in
terms of percentage?

Income

Important Learning!!

Full Pie chart represents

360°

OR

100%

OR

Total of the given data

Income

Problem

Solving

Important

Central Angle= 𝐅𝐫𝐚𝐜𝐭𝐢𝐨𝐧 × 𝟑𝟔𝟎°

Percentage = 𝐅𝐫𝐚𝐜𝐭𝐢𝐨𝐧 × 𝟏𝟎𝟎 %

Problem

Solving

CAC of weeding?

Problem

Solving

If total time spent in gardening is 180 mins.

Time spent in weeding?

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Multiple Choice

• A

• B

• C

• D

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Multiple Choice

Which activity took 50mins if total time taken was 180mins in the whole process?

• Weeding

• Cutting the grass

• Planting

• Digging

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If the monthly savings of the family is Rs 3,000, what is the monthly expenditure on clothes?

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Students of a class voted for their favourite colour and a pie chart was prepared based on the data collected. Which colour received 1/5 of the votes?

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The given figure shows the grades of students in an exam. What is the central angle of the section that represents students who got a grade of excellent?

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The pie chart shows the favourite subjects of students in a class. Using the information given on the pie chart, determine the percentage of students who chose English.