Question

This hard:( i need help :(

Answer 1

`33,680 cm^2`

Explanation:

The formula needed for this problem is..

`S.A=2(l*w)+2(l*h)+2(w*h)`.

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.

`S.A= 2(3*80)+2(3*200)+2(80*200)`

`S.A= 2(240)+2(600)+2(16000)`

`S.A= 480+1200+32000`

`S.A= 33,680 cm^2`