Class 8 Maths Formulas List?

Question

Rational numbers formula class 8 maths formulas for class 6 to 8 math formula class 8 icse class 8 maths chapter 8 all formulas formulas of maths of class 9 geometry formulas for class 8 maths formulas for class 8 state board maths formulas for class 7 maths tricks for class 8 pdf mensuration formulas class 8 in hindi.

Answer 1

कक्षा 8 के लिए बीजगणितीय सूत्र (Algebraic Formula For Class 8)

Identities	Algebraic Equation
(a + b)2	a2 + 2ab + b2
(a − b)2	a2 − 2ab + b2
(a + b) (a – b)	a2 – b2
(x + a) (x + b)	x2 + (a + b)x + ab
(x + a) (x – b)	x2 + (a – b)x – ab
(x – a) (x + b)	x2 + (b – a)x – ab
(x – a) (x – b)	x2 – (a + b)x + ab
(a + b)3	a3 + b3 + 3ab (a + b)
(a – b)3	a3 – b3 – 3ab (a – b)

2 डी आकार के लिए ज्यामिति सूत्र (Geometry Formulas for 2D Shapes)

Geometric Area	Area Formula	Perimeter
Square	a2	4a
Rectangle	a × b	2(a + b)
Circle	πr2	2 πr
Triangle	½(b × h)	P = a + b + c

Answer 2

ठोस आकृतियों के लिए ज्यामिति सूत्र (Formulas for Solid Shapes)

Name of the Solid	Type	Formula
Cuboid	Lateral / Curved Surface Area	2h (l + b)
	Total Surface Area	2 (lb + bh + hl)
	Volume	l × b × h
Cube	Lateral / Curved Surface Area	4a2
	Total Surface Area	6a2
	Volume	a3
Right Prism	Lateral / Curved Surface Area	Perimeter of Base × Height
	Total Surface Area	Lateral Surface Area + 2(Area of One End)
	Volume	Area of Base × Height
Right Circular Cylinder	Lateral / Curved Surface Area	2 (π × r × h)
	Total Surface Area	2πr (r + h)
	Volume	πr2h
Right Pyramid	Lateral / Curved Surface Area	½ (Perimeter of Base × Slant Height)
	Total Surface Area	Lateral Surface Area + Area of the Base
	Volume	⅓ (Area of the Base) × Height
Right Circular Cone	Lateral / Curved Surface Area	πrl
	Total Surface Area	πr (l + r)
	Volume	⅓ (πr2h)
Sphere	Lateral / Curved Surface Area	4πr2
	Total Surface Area	4πr2
	Volume	4/3 (πr3)
Hemisphere	Lateral / Curved Surface Area	2πr2
	Total Surface Area	3πr2
	Volume	⅔ (πr3)