(b) Rajah 19 menunjukkan sebidang permaidani yang diletakkan di atas lantai. Diagram 19 shows a piece of carpet which is placed on the floor. 3 m Permaidani Carpet sm 3m 5 m 8 m Rajah 19 Diagram 19 Cari perimeter, dalam m, lantai yang tidak ditutupi oleh permaidani itu. Find the perimeter, in m, of the floor which is not covered by the carpet. [3 markah) [3 marks] help asap plss tqvm