When heated a metal rod expands 3.5% to 15.23 cm whats is its cold length

The cold length of metal rod is 435.14 cm    

Step-by-step explanation:

Given as :

The percentage expansion of metal rod = 3.5%

The quantity of expansion = 15.23 cm

Let the cold length be x

So,  3. 5% of x = 15.23 cm

Or,   0.035 × x = 15.23 cm

Or,                 x = cm

∴                    x = 435.14 cm  

Hence The cold length of metal rod is 435.14 cm    Answer  

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