Green tile and yellow tile are similar. Perimeter of green tile = 80 cm length of green tile = 24 cm length of yellow tile = 72 cm perimeter of yellow tile = ? now you see if you multiply the length of green tile with 3 you get the length of yellow tile; 24 x 3 = 72 cm As given that both tiles are similar so, if you multiply the perimeter of green tile with 3, you will get the perimeter of yellow tile; 80 x 3 = 240 cm