The length of a rectangle is 3 more than its width the perimeter of the rectangle is 58 cm what are the rectangle's dimensions?

idk help me someone !! plzzz

Length = 3x

Width = x

Perimeter is 2(3x+x) = 8x = 58 cm.

x = 58/8 = 7.25 cm

Length = 3*7.25 = 21.75 cm

Width = 7.25 cm

Perimeter = 58 cm