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Chapter 21 of 28
Formula Sheet

Solids

ICSE · Class 9 · Mathematics

All formulas from Solids in ICSE Class 9 Mathematics. Key equations, constants, and identities for board exam preparation.

42 questions28 flashcards5 concepts

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A comparison illustrating the concept of 1-D (perimeter), 2-D (area), and 3-D (solid/volume) figures with simple geometric shapes.
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12 Formulas · 3 Sections

Formulas

Cuboid formulas

Volume = l × b × h

Total surface area = 2(l×b + b×h + h×l)

Lateral surface area = 2(l+b) × h

Length of diagonal = √(l² + b² + h²)

Cube formulas

Volume = a×a×a = a³

Total surface area = 6a²

Lateral surface area = 4a²

Length of diagonal = √(a²+a²+a²) = a√3

Cost of an article

Cost = Rate × Quantity

Cost of petrol bought = quantity of petrol bought × rate of petrol

Cost of land bought = area of land bought × rate of land

Cost of cloth bought = length of cloth bought × rate of cloth

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Frequently Asked Questions

What are the important topics in Solids for ICSE Class 9 Mathematics?
Solids covers several key topics that are frequently asked in ICSE Class 9 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in Solids — ICSE Class 9 Mathematics?
Understand the core concepts first, then work through the 42 practice questions available for this chapter. Revise formulas and definitions regularly, and use flashcards for quick recall before the exam.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

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Quizzes, flashcards, AI doubt-solver and a step-by-step study plan for ICSE Class 9 Mathematics.