1.

A metal bar is 20 metres long. After heating its lengthincreases by 2%. What is the new length?​

Answer»

Answer:

20.4 metres

BECAUSE

Length Before HEATING = 20m

Length After Heating = 20 + 2% of 20

20 + 2/100 × 20

20 + 0.4 = 20.4m

Thanks



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