Respuesta :
Answer:
$36
Step-by-step explanation:
If the board is 9ft by 9ft, that means all for edges are 9 ft long. Therefore, multiply 9 by 4 to the total perimeter.
9x4=36ft
If the ribbon is $1 per foot, multiply the perimeter by the cost per foot.
36 ft x $1/ft = $36