Solution
Let the edge of the cube = a
Volume of the cube = a$$^3$$
Given, Volume of the cube = 343 cm$$^3$$
$$\Rightarrow$$ a$$^3$$ = 343
$$\Rightarrow$$ a$$^3$$ = 7$$^3$$
$$\Rightarrow$$ a = 7 cm
$$\therefore\ $$Edge of the cube = 7 cm
Hence, the correct answer is Option A
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