Answer:
12. The formula to estimate the amount of material required to cover firm 1's structure not including the floor is π·r² + π·r·h
13. 10445.8 unit²
Step-by-step explanation:
12. The given parameters are;
The shape of the firm 1's structure = Cylindrical shape
The radius of the firm 1's structure = 35
Height of firm 1 structure = 60
The amount of material to cover the firm 1 structure not including the floor = The surface area of a cylinder excluding the base
The formula for the surface area of a cylinder = 2·π·r² + π·r·h
Removing the area of the base, we have
The surface area of a cylinder excluding the case = 2·π·r² + π·r·h - π·r² = π·r² + π·r·h
The formula to estimate the amount of material required to cover firm 1's structure not including the floor = π·r² + π·r·h
13.
The amount of material to cover firm 1's structure not including the floor = π × 35² + π × 35 × 60 = 10445.8 unit².
