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

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What is the value of x if 3x + 7 = 16?

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If a square has a perimeter of 64 cm, what is its area?

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What is the sum of the first 10 positive even numbers?

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The perimeter of a rectangle is 40 cm, and its length is 12 cm. What is its width?

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What is the value of x if log(x) + log(4) = log(32)?

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

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A train 150 m long passes a pole in 15 seconds. What is its speed?

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If a:b = 3:4 and b:c = 5:6, what is a:c?

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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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