At a hardware store, each wooden plank costs $3.57. how much do 12 planks cost?

To find this answer, we need to multiply 3.57 by 12.

Therefore, 12 planks will cost $42.84.

Your answer would be ahere is how: perimeter is how long all the sides are. in a rectangle, there are two sets of parallel sides. so, to find this, we would to the following.(15x2)+(4x2)30+838if you have questions ask! and mark me brainliest! i really wanna level up : 3