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# CBSE Class 8 Maths Revision Notes Chapter 11 – Mensuration

## Revision Notes for CBSE Class 8 Maths Chapter 11 – Free PDF Download

Free PDF download of Class 8 Maths Chapter 11 – Mensuration Revision Notes & Short Key-notes prepared by expert Maths teachers from latest edition of CBSE(NCERT) books. All Chapter 11 – Mensuration Revision Notes to help you to revise complete Syllabus and Score More marks.
Maths NCERT Solutions for Class 8

 Chapter Name Mensuration Chapter Chapter 11 Class Class 8 Subject Maths Revision Notes Board CBSE TEXTBOOK CBSE NCERT Category Revision Notes

## Quick Revision Notes

• Perimeter: Length of boundary of a simple closed figure.
Perimeter of:
Rectangle = 2(l + b)
Square = 4a
Parallelogram = 2(sum of two adjacent sides)
• Area: The measure of region enclosed in a simple closed figure.
• Area of a trapezium = half of the sum of the lengths of parallel sides × perpendicular distance between them.
• Area of a rhombus = half the product of its diagonals.
• Triangle = 1212 x base x height
• Diagonal of:
Rectangle = l2+b2−−−−−√l2+b2
Square = 2a−−√2a
• Surface area of a solid is the sum of the areas of its faces.
• Surface area of: a cuboid = 2(lb + bh + hl) a cube = 6l2 a cylinder = 2πr2πr(r + h)
• Amount of region occupied by a solid is called its volume.
•  Volume of
a cuboid = l x b x h
a cube = l3
a cylinder = ππr2h
• (i) 1 cm= 1 ml
• (ii) 1L = 1000 cm3
• (iii) 1 m3 = 1000000 cm3 = 1000L