The temperature of a hot rod is 278 degree Celsius . If it is made to cool off at the rate of 7 degree Celsius every minute, then what will it's temprature after 20 minutes???
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Answer:
138 degree Celsius
Step-by-step explanation:
In one minute rate of cooling is 7 degree Celsius
In 20 minutes it will be 7*20=140 degree Celsius
therefore final temperature is 278-140=138 degree Celsius
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