# 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 | 4a^{2} |
6a^{2} |
a^{3} |

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) | πr^{2}h |

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 × πr^{2}h |

Sphere | 4πr^{2} |
4πr^{2} |
4/3 × πr^{3} |

Hemisphere | 2πr^{2} |
3πr^{2} |
2/3 × πr^{3} |

Geometric Area | Geometric Area Formula |
---|---|

Square | a^{2} |

Rectangle | a × b |

Circle | πr^{2} |

Ellipse | πr_{1}r_{2} |

Triangle | ½ × b × h |