Octagon Calculator
                                        Enter Side Length
                                    
                                    
                                    
                                        unit
                                    
                                
                                        Area of the Octagon
                                    
                                    
                                    
                                        unit square
                                    
                                
                                        Perimetet of the Octagon
                                    
                                    
                                    
                                        unit
                                    
                                