Answer:
The answer to your question is 9 gallons
Step-by-step explanation:
Data
height = 20 ft
perimeter = 147 ft
1 gallon covers 300 ft²
paint = ?
Formula
Area of a cylinder = 2πrh + πr²
2πr = 147 ft
r = ?
Process
1.- Calculate the radius
2πr = 147
r = 147/2π
r = 23.4 ft
2.- Substitution
Area of the cylinder = 147(20) + 3.14(23.4)²
3.- Simplification
Area of the cylinder = 940 + 1719.33
Area of the cylinder = 2659. 33 ft²
4.- Divide the area of the cylinder by the area a gallon can cover.
Number of gallons = 2659.33/300
= 8.86 ≈ 9
