Answer:
[tex]33,680 cm^2[/tex]
Step-by-step explanation:
The formula needed for this problem is..
[tex]S.A=2(l*w)+2(l*h)+2(w*h)[/tex].
Given that;
The height of the door= 200cm
The length of the door= 3cm
The width of the door= 80cm
Now, substitute the formula with the information given.
[tex]S.A= 2(3*80)+2(3*200)+2(80*200)[/tex]
[tex]S.A= 2(240)+2(600)+2(16000)[/tex]
[tex]S.A= 480+1200+32000[/tex]
[tex]S.A= 33,680 cm^2[/tex]
