$\"\"$ \ \

Side Length of the Octagon is $\"\"$

Octagon has 8 equal sides, so perimeter of the octagon is $\"\"$ $\"\"$

$\"\"$

$\"\"$ (Substitute $\"\"$ )

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

$\"\"$ (Add: $\"\"$ )

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

$\"\"$

The perimeter of the octagon is 88 units