Respuesta :
The area of the deck is length times width: 18x16=288. The area of thing in middle: 4x4=16. If you take away the area of the thing in the middle from the deck you get: 288-16=272. Your answer should be 272 square feet :)
first you need to know that 16X4=64 and that's in all and if you add the 18+64=82 THEN you need to sub the 64-82=-18 and you will have -18