Question

The rectangular top of a small box has dimensions of 140 mm by 230 mm. How long (in centimeters) would a ribbon need to be to go all the way around the edge of the top of the box?

Answer 1

74 cm

1) Since the rectangular top of a small box is a rectangle is 140mm by 230mm then let's find the perimeter.

2p= 2(b+h) Perimeter of a rectangle

2p= 2(140 +230)

2p = 2(370)

2p= 740

2) So the perimeter is 740mm. Let's convert it to centimeters simply dividing it by 10

740 ÷ 10 = 74cm

3) Hence, the ribbon needs to be 74cm long to go all the way around that box