refer to this sketch of a warehouse
please answer please and thank you

Answer:
2) 12,000 ft²
3) 30 gallons.
Step-by-step explanation:
2) 1. You can calculate the lateral surface area of the exterior walls of the warehouse by applying the formula shown below:
[tex]LA=h(2l+2w)[/tex]
Where h is the height, l is the lenght and w is the width.
2. Substitute values and you obtain that the lateral area is:
[tex]LA=20ft[(2*200ft)+(2*100ft)][/tex]
[tex]LA=12,000ft^{2}[/tex]
3) You know that 1 gallon of paint covers 400 ft², therefore for 12,000 ft² are needed the following number of gallons (which is represented by x):
[tex]x=\frac{(1gallon)(12,000ft^{2})}{400ft^{2}}=30gallons[/tex]