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Railways PYQCBT 1 2020

RRB NTPC · Question 2

A cuboid having the surface area of 3 adjacent faces as a, b, c has the volume:

  1. \((abc)^\frac{1}{3}\)

  2. abc

  3. \((abc)^\frac{1}{2}\)

  4. a^3b^3c^3

Show answer & explanation

Answer: (C) \((abc)^\frac{1}{2}\)

Explanation

With edges l, b, h: a = lb, b = bh, c = hl, so abc = (lbh)². Volume = lbh = (abc)^½.