$\"\"$

Let the perimeter of $\"\"$ is x.

By the Proportional perimeters theorem, If two triangles are similar, then the perimeters

are proportional to the measures of corresponding sides, $\"\"$ .

$\"\"$ (Substitute the known values)

$\"\"$ (Apply cross products property)

$\"\"$ (Multiply: $\"\"$ $\"\"$ $\"\"$ $\"\"$ )

$\"\"$ (Divide each side by 6)

$\"\"$ (Simplify) $\"\"$

The perimeter of $\"\"$ is 12.5 units.