Volume and Surface Area on Arithmetic Aptitude related Questions and Answers


Question :   A hollow iron pipe is 21 cm long and its external diameter is 8 cm. If the thickness of the pipe is 1 cm and iron weighs 8 g/cm3, then the weight of the pipe is:


1. 3.6 kg
2. 3.696 kg
3. 36 kg
4. 36.9 kg
Answer :   2 - 3.696 kg  

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