Question

Brody's living room is 9 meters wide and 9 meters long. He wants to put a border around the top of the room. The cost of the border is $2.00 per meter. How much will it cost to buy enough of the border to go around the room?

Answer 1

$72

Explanation:

Assuming the room is a rectangle, its perimeter is the sum of its side lengths. Opposite sides are presumed to be the same length, so the room has a perimeter of ...

2×9 m + 2×9 m = 36 m

Each meter of border costs $2, so the 36 meters of border will cost ...

(36 m)($2/m) = $72

It will cost $72 for enough border to go around the room.