The length of a rectangle is 5 cm longer than its width. If the perimeter of the rectangle is 58cm find its length and width

Answer 1

L=5+W

58 = 2L + 2W = 2(5+W) + 2W = 10 + 2W +2W = 10 + 4W

4W = 58-10 = 48

W = 48/4 = 12 cm for width

L=5+12 = 17 cm for length