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प्रश्न
If 22.5 m of a uniform iron rod weighs 85.5 kg, what will be the weight of 5 m of the same rod?
उत्तर
Weight of 22.5 m of uniform iron rod = 85.5 kg
Weight of 1 m of uniform iron rod = `85.5/22.5` kg
Weight of 5 m of uniform iron rod =`5 × 85.5/22.5 = 427.5/22.5` = 19 kg
Thus, the weight of 5 m of an iron rod is 19 kg.
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