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Engineering Mathematics Miscellaneous

Engineering Mathematics

  1. A parabola x = y² with 0 ≤ x ≤ 1 is shown in the figure. The volume of the solid of rotation obtained by rotating the shaded area by 360° around the x-axis is
    1. 2π
    2. π/2
    3. π/4
    4. π
Correct Option: B


Here, volume of solid of rotation by rotating shaded area by 360° around x-axis is,
V = 1∫0πy²dx

V = 1∫0 πx dx =
πx²
² =
π
202



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