would you use perimeter or area to find the quanity of track needed for a tabletop railroad

http://www.bgfl.org/custom/resources_ftp/client_ftp/ks2/maths/perimeter_and_area/index.html

To determine the quantity of track needed for a tabletop railroad, you would use the perimeter, not the area. The perimeter represents the total length of the track that will outline the tabletop, while the area represents the surface that the track will cover.

To calculate the perimeter, follow these steps:

1. Measure the length and width of the tabletop in the same unit of measurement (e.g., inches, centimeters, or feet).

2. Add the length and width together to find the sum.

3. Multiply the sum by 2 to get the perimeter.

For example, if the length of the tabletop is 24 inches and the width is 12 inches:

Perimeter = (Length + Width) x 2
Perimeter = (24 + 12) x 2
Perimeter = 36 x 2
Perimeter = 72 inches

Therefore, you would need 72 inches of track for a tabletop railroad with a length of 24 inches and a width of 12 inches.