Here we are explaining how to calculate the area of a triangle.

A triangle has three sides. The area of a triangle is calculated as **a=(b*h)/2**. Where **b** is the base length and **h** is the height of the triangle.

First, we have to declare the class **AreaTriangle c**reate an object of the scanner class as **sc,** and read the base length and height of the triangle from the user into the variable **b,h** using the **nextDouble()** method.Calulate the area as **a=(b*h)/2**.Display area as a by using `system.out.println()`

.

**STEP 1**: Declare the class **AreaTriangle** with a **public **modifier.

**STEP 2**: Open the **main()** to start the program, Java program execution starts with the main()

**STEP 3**: Declare the variables **b,h, a** as double.

**STEP 4**: Read the base width of the triangle as **b**.

**STEP 5**: Read the height of the triangle as **h**.

**STEP 6**: Calculate the area of the triangle as **a= (b*h)/2**.

**STEP 7**: Display area **a**.

` ````
import java.util.Scanner;
public class AreaTriangle{
public static void main(String args[]) {
double b,h,a;
Scanner sc = new Scanner(System.in);
System.out.println("Enter the base width of the Triangle:");
b = sc.nextDouble();
System.out.println("Enter the height of the Triangle:");
h = sc.nextDouble();
a = (b* h)/2;
System.out.println("The Area of the Triangle is: " + a);
}
}
```

Enter the base width of the Triangle:10 Enter the height of the Triangle:15 The Area of the Triangle is: 75.0