A rectangle is 13 inch long and 8 inch wide. what is its perimemeter

If it is 13 inches long either add by 13 OR multiply by 2 to get 26, then you would take the 8 inches wide and add by 8 again Or multiply by 2 to get 16, after you have that you will add together your long and wide (26 and 16) to get 42 inches as your perimeter.

I think it's 13 + 13 + 8+8 = 42