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

If log(100) = 2 and log(10) = 1, what is log(1000)?

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A train 120 meters long is moving at a speed of 54 km/h. How long will it take to pass a pole?

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The probability of getting an even number when rolling a die is:

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A triangle has angles 60°, 60°, and 60°. What type of triangle is it?

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If x^2 + 4x + 4 = 0, what is the value of x?

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What is the HCF of 48 and 180?

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What is the sum of the first 50 positive integers?

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If the sum of three consecutive integers is 96, what are the integers?

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What is the sum of the interior angles of a hexagon?

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If the average of five consecutive odd numbers is 25, what is the largest number?

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