the length of a rectangle is fixed at 13cm. what widths will make the perimeter greater than 80 cm? The width must be greater than ?

Answer 1

P = 2L + 2W

80 = 26 + 2W
80 - 26 = 2W
54 = 2W
54/2 = W
27 = W

The width must be more than 27

Answer 2

355