Ultrasonic Parking Sensor Help

HELP!!!!!!!!!!

int sensor = A0;
int Buzzer = 12;
int ledred1 = 11;
int ledred2 = 10;
int ledred3 = 9;
int ledyellow = 8;
int ledgreen = 7;

void setup()
{

pinMode(sensor,INPUT);
pinMode(ledgreen,OUTPUT);
pinMode(ledyellow,OUTPUT);
pinMode(ledred1,OUTPUT);
pinMode(ledred2,OUTPUT);
pinMode(ledred3,OUTPUT);
Serial.begin(9600);
}

void loop()
{

float distance = 12343.85 * pow(analogRead(sensor),-1.15);

Serial.println(distance);
delay (50);

void setup()

Serial.begin(9600);

if (Distance <=10)

}
digitalWrite(ledgreen,HIGH);
digitalWrite(ledyellow,HIGH);
digitalWrite(ledledred1,HIGH);
digitalWrite(ledledred2,HIGH);
digitalWrite(ledledred3,HIGH);
digitalWrite(ledledred4,HIGH);

}
if((Distance <=10) && (value > 20))
{
digitalWrite(ledgreen,HIGH);

if((Distance <=20) && (value > 30))
}
digitalWrite(ledyellow,HIGH);
if((Distance <=30) && (value > 40))
{
digitalWrite(ledred1,HIGH);

if((Distance <=20) && (value > 30))
{
digitalWrite(ledred2,HIGH);
if((Distance <=50) && (value > 60))
{
digitalWrite(ledred3,HIGH);
if((Distance <=50) && (value > 60))
{
digitalWrite(ledred4,HIGH);
if((Distance <=50) && (value > 60))

}

void setup() {

}
tone(Buzzer,3000);
delay(1000)
noTone(Buzzer);

void loop()
{

}

}