prism area
[tex]\begin{gathered} SA=2lw+2lh+2wh \\ SA=2(10\times10)+2(10\times32)+2(10\times32) \\ SA=2(100)+2(320)+2(320) \\ SA=200+640+640 \\ SA=1480 \end{gathered}[/tex]then, pyramid area
[tex]\begin{gathered} SA=l(2\times ap+l) \\ SA=10(2\times12+10) \\ SA=10(24+10) \\ SA=10(34) \\ SA=340 \end{gathered}[/tex]therfore, area of the figure
[tex]SA=1480+340=1820[/tex]answer: D. 1820 sq feet
