On this page, you will find Mensuration Class 8 Notes Maths Chapter 11 Pdf free download. CBSE NCERT Class 8 Maths Notes Chapter 11 Mensuration will seemingly help them to revise the important concepts in less time.
CBSE Class 8 Maths Chapter 11 Notes Mensuration
Mensuration Class 8 Notes Conceptual Facts
1. Area of rectangle
A = Length x Breadth
= a x b sq. units
2. Area of square
A = (side)2
= a2 sq. units
3. Area of triangle
A = \(\frac{1}{2}\) x b x h sq.units
4. Area of equilateral triangle
A = \(\frac{\sqrt{3}}{4} a^{2}\) sq.units
5. Area of parallelogram
A = b x h sq. units
6. Area of Circle
A = πr2 sq. units
7. Area of trapezium
A = \(\frac{1}{2}\)(a + b) x h sq. units
8. Area of general quadrilateral
A = Area of ΔABC + area of ΔACD
= \(\frac{1}{2}\) (a + b) x AC sq. units
9. Area of rhombus
A = \(\frac{1}{2}\) (d1 x d2) sq. units
10. Surface area of cube
A = 6a2 sq. units
11. Surface area of cuboid
A = 2 [ab + bc + ca] sq. units
12. Surface area of cylinder
A = 2πrh sq. units
13. Volume of cube V = a3 units
14. Volume of cuboid V = a x b x c cu. units
15. Volume of cylinder V = πr2h