Triggering leds after a ultrasonic reaches less than 10CM

Other Hardware LEDs and Multiplexing
1

Hi! (Please move this post if in the wrong section, thanks) (Sorry for bad English, i am not a native speaker of English.)
I recently made a project with a HC_SR04 and IC2 LCD, and I need it to blink/Turn an led on once it reaches 10cm or less. And if possible, to blink a led if it has more than 10cm detected. If also possible, try and use Digital (PWM~) 0,1,3,4,5,6,7,8,9,10 and 11.
Thanks alot <3

#include <LiquidCrystal.h>
LiquidCrystal lcd(2, A0, A1, A2, A3, A4, A5);

#define trigPin 12
#define echoPin 13

void setup()
{
lcd.begin(16,2);
lcd.clear();
lcd.setCursor(0,1);
lcd.print("Eco-Can Project");

pinMode(trigPin, OUTPUT);
pinMode(echoPin, INPUT);
}

int Dist(){
long duration, distance;
digitalWrite(trigPin, LOW);
delayMicroseconds(2);
digitalWrite(trigPin, HIGH);
delayMicroseconds(10);
digitalWrite(trigPin, LOW);
duration = pulseIn(echoPin, HIGH);
distance = (duration/2) / 29.1;

return distance;
}

void loop()
{
lcd.setCursor(0,0);
lcd.print("Distance: ");

lcd.setCursor(10,0);
lcd.print(Dist());
lcd.print("cm ");

delay(200);
}

3

Try

void loop()
{
  lcd.setCursor(0,0);           
  lcd.print("Distance: ");  

  distance=Dist();

  if (distance<= 10){
     analogWrite(led,255);
     lcd.setCursor(10,0);
 }
  
  lcd.print(distance);
  lcd.print("cm  ");

  delay(200);
}

I used these declarations for LED

#define trigPin 13
#define echoPin 12
#define led 11


void setup() {
  Serial.begin (9600);
  pinMode(trigPin, OUTPUT);
  pinMode(echoPin, INPUT);
  pinMode(led, OUTPUT);
}