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An iron pole is 4m high and 28cm in diameter find its weight if the iron weighs 50 kg per m^3 |
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Answer» :volume of pole is 2464 m³weight is 12.32 kg Given : HEIGHT is 4mDiameter is 28cmTo find : weightSolution : Radius = 28/2 = 14CM = 14/100 = 0.14cmRadius is 0.14 cm As we know that :volume of the pole = πr²hwhere r is 0.14, H is 4m➳ volume of the pole = πr²h➳ volume of the pole = 22/7 × 0.14 × 0.14 × 4➳ volume of the pole = 22 × 0.02 × 0.14 × 4➳ volume of the pole = 0.2464 m³∴Hence , Volume of pole is 0.2464 m³Now we have to find the weight :Given that, the IRON weight is 50kg per m³weight = volume × weight per volume➳ weight = 0.2464 × 50 ➳ weight = 12.32 kg∴Hence weight is 12.32kg |
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