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Earlier discussion

2 older comments kept for context.

Femi_Abere Tofunmi

1000=10×10×0.054(t-300)/0.25
Cross multiply
250=5.4(t-300)
250/5.4=t-300
46.3=t-300
t=46.3+300
t=346.3k
Note:temperature has been converted to kelvin and length has been converted to meter. Since our answer is in celcius:
t=346.3-273
t=73.3degree celcius

Vick Thor

Sir what formulae did you use