What is the relationship between pipes and temperature?

[deynak]

Homework Statement

By how much can a 10 km highway lengthen after passing pipes with hot water?
a) 100m; b) 50m; c) 25m; d) 10m.

Relevant Equations

ΔL = L x a x ΔT
ΔL = total change in the length of the pipe [mm]
L = original pipe length [m]
a = linear expansion coefficient
ΔT = difference in temperature [°C]

It seems for me that something is missing on the question. Actually, I do not know where to start.

 

[kuruman]

You have provided a relevant equation. What do you need to know to answer the question using it? If it is not given to you, make some reasonable assumptions and/or look up any values you need to know.

 

[Chestermiller]

Problem Statement: By how much can a 10 km highway lengthen after passing pipes with hot water?
a) 100m; b) 50m; c) 25m; d) 10m.
Relevant Equations: ΔL = L x a x ΔT
ΔL = total change in the length of the pipe [mm]
L = original pipe length [m]
a = linear expansion coefficient
ΔT = difference in temperature [°C]

It seems for me that something is missing on the question. Actually, I do not know where to start.

Is this really the exact statement of the problem? What does "after passing pipes with hot water" even mean?

 

[deynak]

Solved it! I used some assumptions for linear expansion coefficient .