Chapter 7 (Samacheer Kalvi) · Class 9 TN Board · Formula Sheet

Mensuration (அளவியல்) Formulas — Class 9 TN Board

Surface area and volume of cubes, cuboids, cylinders, cones, and spheres.

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Worked Examples

1Using: Area of Rectangle

Find the area of a rectangle with length 12 cm and breadth 5 cm.

Step 1: Area = l x b

Step 2: = 12 x 5 = 60 sq. cm.

Answer: 60 sq. cm

2Using: Perimeter of Square

Find the perimeter of a square with side 8 m.

Step 1: Perimeter = 4a

Step 2: = 4 x 8 = 32 m.

Answer: 32 m

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More Class 9 TN Board Formulas

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Frequently Asked Questions

How many formulas are in Class 9 TN Board Mensuration (அளவியல்)?+
There are several key formulas in the Mensuration (அளவியல்) chapter for Class 9 TN Board. Each formula is essential for solving problems in this topic.
How to remember Mensuration (அளவியல்) formulas easily?+
Practice regularly with worked examples, group related formulas together, and use SparkEd's interactive practice mode to reinforce your memory through problem-solving.
Are these Mensuration (அளவியல்) formulas enough for exams?+
Yes, these formulas cover the complete TN Board Class 9 syllabus for Mensuration (அளவியல்). Practice applying them to different types of questions for full exam readiness.

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