Respuesta :

Two pyramids are similar, so ratio of the corresponding sides are equal.

Determine the height of large pyramid.

[tex]\begin{gathered} \frac{h}{16}=\frac{20}{5} \\ h=4\cdot16 \\ =64 \end{gathered}[/tex]

The formula for the volume of pyramid is,

[tex]V=\frac{1}{3}\cdot A\cdot h[/tex]

Here, A is base area of pyramid.

Determine the volume of pyramid.

[tex]\begin{gathered} V=\frac{1}{3}\cdot(20\cdot20)\cdot64 \\ =8533.33 \\ \approx8533.3 \end{gathered}[/tex]

So answer is V = 8533.3 inches cube.