berapa keliling jika panjang 6 cm. lebar 4 cm, jika skala gambar 1:100

Panjang : 6 X 100 = 600 cm = 6 m
Lebar : 4 X 100 = 400 cm = 4 m

Keliling : = 2 (p+l)
= 2 (6+4)
= 2 × 10
= 20 m