Jan is decorating his home for the holidays and wants to hang lights in the three of his living room windows. Each window is a rectangle measuring 6 feet x 4 feet how many feet of string lights will be hanging around the three windows

The total perimeter of all three windows is:

Perimeter = 3 * (2*6 + 2*4) = 3 * (12 + 8) = 3 * 20 = 60 feet

Therefore, Jan will need 60 feet of string lights to hang around the three windows.