## Answers

volume of the box = xyz cm? Total surface area = xy + 2x2 + 3y ² - . * * * 162 — о Now, applying the A.M. -G.

M. net inequality, we get ч 1 2x2 + 3ч 2 ич, 392. 24- . 3 > > [« бу» - . мен «s:, Сад, Р у - 2 ас зуг and the volume will be maximum 1.

When the equally holds , , 5 = 2х - Зу? • 1 = а • + (O) 2 t". 44 .» (4242- ) (2 * 2 ) 7 а) t = 3 -

- 9-6 2 - 3 . () The volume will be maximum if ясе. Чес, 2-3 см. - .

.
- аса се :.() is consect. Съ< . чах - Рx 41. – . x 2 - - 4 - пър 2.

х - 12 + 2 , .:. (D) is correct.

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