Question

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Answer 1

The piece of wood is in a rectangular prism shape
And the volume formula for a rectangular prism is
  V = length x width x height

The given are
Length = 1, Width = 1, Height = $\frac{1}{3}$

Apply the formula (substitute the given)

    V = 1 x 1 x$\frac{1}{3}$

 V of the piece of wood is:  $\frac{1}{3}$ in³