Geometry Formulas For Class 8

Geometry is a branch of mathematics that concerns with the questions of shape, size, the relative position of figures, and the properties of space. Geometry Formulas are used to calculate the length, perimeter, area and volume of different geometric shapes and figures. They are also used to calculate the arc length, radius etc.

List of Geometry Formulas For Class 8

The table below gives you a few important geometry formulas for class 8. The formulas listed below are commonly required in class 8 geometry to calculate lengths, areas and volumes.

Geometry Shapes Formulas for Class 8
Name of the Solid Lateral / Curved Surface Area Total Surface Area Volume
Cuboid 2h(l+b) 2(lb+bh+hl) lbh
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 2πrh 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 2/3 × πr3
Geometric Area Geometric Area Formula
Square a2
Rectangle a × b
Circle πr2
Ellipse πr1r2
Triangle ½ × b × h
Quiz on Class 8 Geometry Formulas


  1. What is the fourmala perimeter and area.

    1. Perimeter and area of different shapes.
      Learn more here: Perimeter and Area

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