## 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 = 6l^{2}

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 = l^{3}

a cylinder = ππr^{2}h - (i) 1 cm
^{3 }= 1 ml - (ii) 1L = 1000 cm
^{3} - (iii) 1 m
^{3}= 1000000 cm^{3}= 1000L