Railways Sample Paper RRBs Assistant Loco Pilot and Technician CBT STAGE-I Sample Paper-16

  • question_answer
    How many spherical bullets can be made out of a lead cylinder 28 cm high and 6 cm radius, each bullet being 1.5 cm in diameter?

    A)  1729   

    B)  1927

    C)  1792   

    D)  1972

    Correct Answer: C

    Solution :

    Number of bullets \[=\frac{\text{Volume}\,\,\text{of}\,\,\text{cylinder}}{\text{Volume}\,\,\text{of}\,\,\text{a}\,\,\text{bullet}}\] \[=\frac{\pi \times {{(6)}^{2}}\times 28}{\frac{4}{3}\times \pi \times {{\left( \frac{1.5}{2} \right)}^{3}}}=\frac{36\times 28\times 24}{4\times 1.5\times 1.5\times 1.5}\] \[=1792\]


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