Mr. Okutani is decorating a bulletin board that is 5 dm high and 7 dm wide. He has 2 packages of border that each contain 125 cm of border. does he have enough border to go all around the outside of the bulletin board?
Since you only have dm, and not dam or dkm, I will assume that you mean decimeter. 1 decimeter is 10 centimeters. The perimeter is 24. That becomes 240 cm. He has 2 x 125 cm. He has 250 cm of border. 250>240. He has enough of border to go all around.
