Respuesta :
To find perimeter you must do 2l+2w so to find the length you have to plug in 5
2(5)+2l
10+2l =16
-10. -10
2l=6
/2. /2
L=3
-- "Perimeter" means all the way around, all four sides.
-- That's two lengths and two widths.
-- So one length and one width is half of the perimeter.
-- If the perimeter is 16-ft, then one length + one width is 8-ft.
-- If the width is 5-ft, then the length is (8 - 5) = 3-ft.