Step 1:

The triangle with the base of $\"\"$ and the height of $\"\"$ and width of the rectangle is $\"\"$ .

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

Substitute the values $\"\"$ in $\"\"$ .

$\"\"$

Area of a rectangle: $\"\"$ .

$\"\"$ rd of the area of a rectangle is $\"\"$ .

Substitute the values $\"\"$ in $\"\"$ .

$\"\"$

Equate area of the triangle and area of the rectangle to fimd the length of the rectangle.

$\"\"$

Solution :

The length of the rectangle is $\"\"$ .