Answer:
1) 100cm
2) 150cm
3) 170cm
4) 174cm
5) 47cm
Step-by-step explanation:
1) 20cm
P = 5(20)
P = 100 cm
2) 20cm, 55cm
P = 2(20+55)
P = 150cm
3) 30cm, 50cm, 90cm
P = 30 + 50 + 90
P = 170cm
4) 50cm, 40cm, 47cm, 37cm
P = 50 + 40 + 47 + 37
P = 174cm
5) 5cm, 6cm, 7cm, 8cm
P = 5 + 8 + 6 + 7 + 7 + 6 + 8
P = 47cm
Hope it helps. Pabrainliest :)