$\"\"$

Observe the figures:

Find the $\"\"$ value so that figures have the same perimeter.

The perimeter is sum of the sides of the polygon.

The perimeter of the right angle is $\"\"$ .

$\"\"$ $\"\"$ .

The perimeter of the second is $\"\"$ .

$\"\"$ (Original equation) \ \

$\"\"$ (Simplify)

$\"\"$ (Distributive property: $\"\"$ )

The perimeter of the triangle is equal to perimeter of the rectangle.

The equation represent as $\"\"$ .

$\"\"$

Check the equation.

Here $\"\"$ .

$\"\"$

Since, the value $\"\"$ results in a true stament.s

The right choice is A.

$\"\"$

The right choice is A.