Respuesta :

Answer:

5

Step-by-step explanation:

20*5=100

Answer:

10 meters

Step-by-step explanation:

Let at 100 degrees Celsius, the aluminum bar is x m long.

We have been given that aluminum bar is 2 m long at a temperature of 20 degrees Celsius.

Thus, we have the equation

[tex]\frac{2}{20}=\frac{x}{100}[/tex]

Solve the equation for x

[tex]x=\frac{2\times100}{20}\\\\x=10[/tex]

Thus, at 100 degree Celsius, the aluminium bar is 10 meters long.