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# Geometry FORMULAS!

### surface area, area, volume

Question | Answer |
---|---|

Perimeter of a shape | P=2a+2b |

Circumference of a circle | C=2(pie)r or (pie)d |

Area of a Square | A=lw |

Area of a rectangle | A=lw |

Area of a right triangle | A=(1/2)ab |

Area of a parallelogram | A=bh |

Area of a triangle | A=(1/2)bh |

Area of a trapezoid | A=(1/2)(b1+b2)h |

Area of a polygon | A=(1/2)asn or (1/2)aP |

Area of a circle | A=(pie)r^2 |

Pythagorean therom | a^2+b^2=c^2 |

Surface Area of a right prism | SA=2A+Ph |

Surface Area of a right regular pyramid | SA=A+(1/2)Pl |

Surface Area of Cylinder | SA=(2A+Ch) |

Surface area of a cone | SA=A+(1/2)Cl or (pie)r^2+(pie)rl |

Surface Area of a sphere | 4(pie)r^2 |

Surface area of a cube | SA=6s^2 |

Volume of right prism | V=Ah |

Volume of a rectangle | V=lwh |

Volume of a cube | V=s^3 |

Volume of a pyramid | V=(1/3)Ah |

Volume of a cylinder | V=(pie)r^2h |

Volume of a cone | V=(1/3)(pie)r^2h |

Volume of a sphere | V=(4/3)(pie)r^3 |

Created by:
Underwood