Skip to main content
Super TutorResources
Chapter 14 of 14
QuestionsNotesFlashcardsSummaryFormulasQuizConceptsSyllabusPlan
Revision Notes

Area

CBSE · Class 8 · Mathematics

Quick revision notes for Area — CBSE Class 8 Mathematics. Key concepts, formulas, and definitions for last-minute revision.

73 questions60 flashcards5 concepts

Interactive on Super Tutor

Studying Area? Get the full interactive chapter.

Quizzes, flashcards, AI doubt-solver and a step-by-step study plan — built for revision notes and more.

Try Super Tutor — Free

1,000+ Class 8 students started this chapter today

Key Topics to Revise

1

1. Area of rectangles and squares

  • Area is measured by counting unit squares.
  • Area of a rectangle equals length × width.
  • A 7 cm × 4 cm rectangle contains 28 unit squares.
2

2. Area of triangles

  • The area of a triangle is half the product of its base and height.
  • The formula works for all triangles, including triangles that cannot be enclosed by a rectangle with that base.
  • In identical rectangles, triangles like ΔXDC, ΔYDC, and ΔYBC each have exactly half the area of rectangle ABCD.
3

3. Area of any polygon

  • Any polygon can be divided into triangles.
  • Once a polygon is split into triangles, its area is found by adding the triangle areas.
  • This method works for quadrilaterals, pentagons, and other polygons.
4

4. Area of a parallelogram

  • A parallelogram can be dissected into a rectangle of equal area.
  • The process of cutting a figure into pieces and rearranging them to get a different figure of equal area is called dissection.
  • In the dissection, ΔAXD is moved to the position of ΔBYC.

Get complete notes with diagrams and examples

Full Notes

Key Concepts

The area of a rectangle equalsA diagonal divides a rectangle intoPerimeter is not a valid measureThe area of a triangleThe same triangle can have its

Frequently Asked Questions

What are the important topics in Area for CBSE Class 8 Mathematics?
Area covers several key topics that are frequently asked in CBSE Class 8 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in Area — CBSE Class 8 Mathematics?
Understand the core concepts first, then work through the 73 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.

More resources for Area

All 14 chapters — CBSE Class 8 Mathematics Revision Notes

For serious students

Get the full Area chapter — for free.

Quizzes, flashcards, AI doubt-solver and a step-by-step study plan for CBSE Class 8 Mathematics.

Try Super Tutor Free
Try the full chapter — Free