Answer:

14m, 21m and 49m

Step-by-step explanation:

let x be the rope in m,

2:3:7 = 84 m

2x + 3x + 7x = 84 m

12x = 84 m

x = 7 m

2x =2(7) = 14 m

3x =3(7) = 21 m

8x =7(7) = 49 m