A rectangular solid has length, width, and height of \(L\, \text{cm}, W \, \text{cm},\) and \(H \, \text{cm},\) respecti

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A rectangular solid has length, width, and height of \(L\, \text{cm}, W \, \text{cm},\) and \(H \, \text{cm},\) respectively. If these dimensions are increased by \(x\%, y\%,\) and \(z\%,\) respectively, what is the percentage increase in the total surface area of the solid?

(1) \(L, W,\) and \(H\) are in the ratios of \(5:3:4.\)
(2) \(x = 5, y = 10, z = 20\)

Answer: C

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