Answer:
120 cm, 160 cm, 80 cm, 360 cm
Step-by-step explanation:
The ratio 3:4:2:9 is the same as the ratio 3x:4x:2x:9x
We add all the terms of the second ratio:
3x + 4x + 2x + 9x = 18x
18x = 720
x = 40
3x = 3(40) = 120
4x = 4(40) = 160
2x = 2(40) = 80
9x = 9(40) = 360
Answer: 120 cm, 160 cm, 80 cm, 360 cm
