A **rectangle** is a quadrilateral with four right angles.

Say rectangle is given with side’s length **A** and **B**

**Area of Rectangle** = A * B

**Perimeter of rectangle** = 2(A+B)

**Code**:

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public class AreaOfRectangle { | |

public static void area(double a, double b){ | |

double area = a * b; | |

System.out.println("Area of Rectangle: " + area); | |

} | |

public static void perimeter(double a, double b){ | |

double perimeter = 2*(a + b); | |

System.out.println("Perimeter of Rectangle: " + perimeter); | |

} | |

public static void main(String[] args) { | |

double a = 3; | |

double b = 4; | |

area(a, b); | |

perimeter(a, b); | |

} | |

} |

**Output**:

Area of Rectangle: 12.0 Perimeter of Rectangle: 14.0