extra maths for class 8 maths formula
Answers
Answer:
Geometry Shapes Formulas for Solid Shapes:
Name of the Solid Lateral / Curved Surface Area Total Surface Area Volume
Cuboid 2h (l + b) 2 (lb + bh + hl) l × b × h
Cube 4a2 6a2 a3
Right Prism Perimeter of Base × Height Lateral Surface Area + 2(Area of One End) Area of Base × Height
Right Circular Cylinder 2 (π × r × h) 2πr (r + h) πr2h
Right Pyramid ½ (Perimeter of Base × Slant Height) Lateral Surface Area + Area of the Base ⅓ (Area of the Base) × Height
Right Circular Cone πrl πr (l + r) ⅓ (πr2h)
Sphere 4πr2 4πr2 4/3 (πr3)
Hemisphere 2πr2 3πr2 ⅔ (πr3)
Geometry Shapes Formulas for 2D Shapes:
Geometric Area Geometric Area Formula
Square a2
Rectangle a × b
Circle πr2
Ellipse πr1r2
Triangle ½(b × h)
Click here to get all geometry formulas
Algebra Formulas for Class 8
Some important 8th class formulas related to algera are:
Algebraic Identities For Class 8
(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)
Answer:MilliondollarbillsonHelping Hand
Know the answer? Add it here!
kanojiyagopal0
Kanojiyagopal0Ambitious
Answer:
Geometry Shapes Formulas for Solid Shapes:
Name of the Solid Lateral / Curved Surface Area Total Surface Area Volume
Cuboid 2h (l + b) 2 (lb + bh + hl) l × b × h
Cube 4a2 6a2 a3
Right Prism Perimeter of Base × Height Lateral Surface Area + 2(Area of One End) Area of Base × Height
Right Circular Cylinder 2 (π × r × h) 2πr (r + h) πr2h
Right Pyramid ½ (Perimeter of Base × Slant Height) Lateral Surface Area + Area of the Base ⅓ (Area of the Base) × Height
Right Circular Cone πrl πr (l + r) ⅓ (πr2h)
Sphere 4πr2 4πr2 4/3 (πr3)
Hemisphere 2πr2 3πr2 ⅔ (πr3)
Geometry Shapes Formulas for 2D Shapes:
Geometric Area Geometric Area Formula
Square a2
Rectangle a × b
Circle πr2
Ellipse πr1r2
Triangle ½(b × h)
Click here to get all geometry formulas
Algebra Formulas for Class 8
Some important 8th class formulas related to algera are:
Algebraic Identities For Class 8
(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)
Step-by-step explanation: