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

A car travels 240 km in 4 hours. What is its average speed?

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If the perimeter of a square is 36 cm, what is the length of its diagonal?

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If x + 1/x = 5, what is the value of x^2 + 1/x^2?

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What is the area of a circle with a diameter of 14 cm?

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

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

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If two complementary angles differ by 30°, what are the angles?

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If a rectangle has a length of 10 cm and a width of 6 cm, what is its perimeter?

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The angles of a quadrilateral are in the ratio 3:4:5:6. What is the largest angle?

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If x^2 - 5x + 6 = 0, what are the roots?

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