Answer:
104,196 square meter
Explanation:
This question can be solved by using the formula of area of four side in a
rectangular prism
In the given problem we have
Length of building = 218m
width of building = 158m
height of building = 160
Area of four walls is given by formula = 2*(L + B) * H
where L is length of rectangular prism
B is width of rectangular prism
H is height of rectangular prism
Therefore total surface area of building = 2*(218 + 158)* 160 = 376*320= 120,320
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No of doors in the building = 4
length of door = 139m
width of door = 29 m
area of one door = length * width = 139* 29 = 4,031
area of four door = 4* 4,031 = 16,124
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we have to find surface area of building when doors are open
To find this we can subtract total area of four door from total surface area of four walls which we have calculated above
total surface area of four walls - total area of four door
=> 120,320 - 16,124 = 104,196
104,196 is the buildings outside surface area when the doors are open