Answer:
57 gallons
Explanation:
Given:
Silo needs to be painted.
Height of silo = 80 feet
Diameter of silo = 20 feet
One gallon of paint covers 100 sq ft
To find:
Gallons of Paint required to paint the outside of silo = ?
Solution:
We need to first calculate the lateral surface area(LSA) of this cylinder shaped silo.

where r is the radius and
h is the height of cylinder.

Putting the values in formula:

Total surface area of cylinder = LSA + 2
Area of base
Total surface area of cylinder = LSA + 2

TSA =

100 sq ft requires number of gallons = 1
5652 sq ft requires number of gallons:
