Q.The length, breadth, and height of a cuboid are in the ratio 4:3:2. If its total surface area is 468 square meters, find the volume of the cuboid.

Let the length, breadth, and height of the cuboid be \(4x\) meters, \(3x\) meters, and \(2x\) meters respectively. \(\therefore\) According to the question, \(2(4x \cdot 3x + 3x \cdot 2x + 2x \cdot 4x) = 468\) Or, \(2(12x^2 + 6x^2 + 8x^2) = 468\) Or, \(2 \times 26x^2 = 468\) Or, \(x^2 = \frac{468}{2 \times 26}\) Or, \(x = \sqrt{9} = 3\) Now, volume of the cuboid = \(4x \cdot 3x \cdot 2x\) cubic meters \(= 24x^3\) cubic meters \(= 24 \times 3^3\) cubic meters \(= 24 \times 27\) cubic meters \(= 648\) cubic meters \(\therefore\) The volume of the cuboid is 648 cubic meters.
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