Question

What is the length of an aluminum rod at 65°c if its length at 15°c is 1.2 meters?

Answer 1

1.201386 meters at 65 degrees C.      
 Will be your answer!

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Answer 2

Answer: The length of aluminium rod at 65°C is 5.2 meters.

Explanation:

We are given:

Length of aluminium rod at 15°C = 1.2 meters

We need to find the length of aluminium rod at 65°C

To find the length, we use unitary method:

At 15°C, the length of aluminium rod is 1.2 meters

So, at 65°C, the length of aluminium rod will be = $\frac{1.2m}{15^oC}\times 65^oC=5.2m$

Hence, the length of aluminium rod at 65°C is 5.2 meters.