The perimeter of a rectangular piece of metal is 24 centimeters. it is 4 1/2 centimeters wide. how long is it

P=24 (cm)

width = 4 1/2 (cm)

P = (a+b) * 2=24

a - width

b - length

4.5+b=24/2=12

b=12-4.5

b=7,5

Well, length is 7.5 cm

7 3/4 centimeters long. 4 1/2 x 2 = 8 1/2 (width of both sides combined) 24 - 8 1/2 = 15 1/2 (length of both sides combined) 15 1/2 divided by 2 = 7 3/4 (length of one side)