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 a + b = 10 and ab = 21, what is the value of a^2 + b^2?

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The sides of a triangle are 5 cm, 12 cm, and 13 cm. What type of triangle is it?

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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 the radius of a circle is doubled, what happens to its area?

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If a = 4 and b = 5, what is the value of (a+b)^2?

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

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

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If x = 2 and y = 3, what is the value of (x^2 + y^2)?

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The LCM of 12 and 15 is:

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What is the sum of all even numbers between 1 and 50?

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