Answer
$d_o=44.22m$
Work Step by Step
$m=\frac{h_i}{h_o}=-\frac{d_i}{d_o}$
$d_o=-\frac{d_ih_o}{h_i}$
$\frac{1}{f}=\frac{1}{d_i}+\frac{1}{d_o}$
$d_i=\frac{fd_o}{d_o-f}$
$-\frac{h_i}{h_o}=\frac{f}{d_o-f}$
$d_o=f(1-\frac{h_o}{h_i})=(220mm)(1-\frac{1650mm}{-8.25mm})=44220mm=44.22m$
