Topic Details (Notes format)

How to Interpret and Plot Pie Charts

Subject: Mathematics

Book: Maths Mastery

Pie charts represent categorical data as slices of a circle, where each slice’s angle or area corresponds to a category’s proportion. For instance, if a total budget is ₹10,000 and marketing gets ₹2,500, that slice is 25% of the pie or 90° out of 360°. To plot, calculate each category’s percentage, multiply by 360 to get slice angles, and then draw accordingly. Pie charts offer quick visual breakdowns of how parts contribute to a whole, aiding in budget distributions, poll results, and market share analysis. Mastery ensures your data storytelling is intuitive, vivid, and effective.

Practice Questions

What is the greatest common divisor (GCD) of 36 and 48?

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What is the remainder when 5^100 is divided by 3?

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If x:y = 4:5 and y:z = 2:3, what is x:z?

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If x^3 - 3x^2 + 4 = 0, what is one root of the equation?

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The area of an equilateral triangle with side length 6 cm is:

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If the product of two numbers is 120 and their sum is 26, what are the numbers?

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A sphere has a radius of 7 cm. What is its volume?

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What is the sum of the first 20 odd numbers?

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What is the area of an equilateral triangle with side length 10 cm?

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A number is increased by 20% and then decreased by 10%. What is the net change?

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