The volume of a cube is 343 ${c m}^{3} .$ Find its surface area.

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Solution

$l e t s i d e o f c u b e b e x t h e n x^{3} = 343 x^{3} = 7^{3} ∴ x = 7 c m n o w s u r f a c e a r e a = 6 x^{2} = 6 \cdot 49 = 294$

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