$\"\"$

Area of the traingle is $\"\"$ .

Observe the figure:

Triangle height is $\"\"$ and base is $\"\"$ .

Find area of the triangle.

$\"\"$ (Orginal equation)

$\"\"$ (Substitute $\"\"$ and $\"\"$ in the equation)

$\"\"$ (Multiply)

$\"\"$ (Multiply) \ \

Therefore, the area of the triangle is $\"\"$ .

$\"\"$

The area of the triangle is $\"\"$ .