4.9 cm

2 cm

2.9 cm

2.9 cm

2 cm

1 cm

2 cm

3 cm

3 cm

2 cm

3.9

3.9

0.9

0.9

3.9

3.9

1.9

1.9

1.8 cm

1.8 cm

1.8 cm

5.4 cm

15.7 cm

10 cm

6.8 cm

3 cm

4 cm

6 cm

4.9 cm

2 cm

3 cm

1 cm

Answer: 30.7 cm