On the other hand, because it's a rectangle, the area is equal to its height times its base, and the height is clearly eight, and the base is five plus eight, which is the next Fibonacci number, 13. Right?
Yang kedua, luas sebuah segi empat tepat, ialah tinggi x tapak, tinggi = 8, tapak = 5 + 8, iaitu 13, nombor Fibonacci yang berikutnya, kan?