tolong beritahu jawabanya dan caranya ya thanks

skala = 1 : 100

ukuran sebenarnya :

a. ruangan = p = 12 x 100 = 1200 cm = 12 m ,l = 6 x100 = 600 cm = 6 m
                      L = 12 x 6 = 72 m²

b. meja = p = 1 x 100 = 100 cm = 1 m
                l = 2 x 100 = 200 cm = 2 m
               L = 1x2 = 2 m²

c.lemari = p =2 x 100 = 200 cm = 2 m
                 l = 1x100 = 100 cm = 1 m
                L = 2 x1 = 2 m²

semoga bantu yaaa