Find the volume of a frustum of a pyramid with square base of side $23,$ square top of side $9$ and height $12.$Evaluate the following code to determine the output.

class foo $\{$

public int $i=37$;

public Foo$($int i$)\{$

this. $i=i$;

$\}$

$\}$

cdots

FOO $x=$ new $FO0(18),y=$ new $\frac{F}{O}O(75)$;

$x=y$;

$y\frac{*}{b}ar(i)=23$;

System.out.println$($x$.$i$)$;