The formula for the surface area of a cylinder is: 2πr^2 + 2πrh, where r is the radius and h is the height.
Given:
Radius (r) = 5.5 ft
Height (h) = 16 ft
Surface area = 2(3.14)(5.5)^2 + 2(3.14)(5.5)(16)
Surface area = 2(3.14)(30.25) + 2(3.14)(88)
Surface area = 2(94.99) + 2(277.12)
Surface area = 189.98 + 554.24
Surface area = 744.22 ft^2
To find out how many full gallons of paint would be needed for two coats on the entire surface of the tank:
2 coats = 2 * 744.22 ft^2 = 1488.44 ft^2
Since 1 gallon of paint covers 140 ft^2, the number of gallons needed would be:
1488.44 ft^2 / 140 ft^2/gallon = 10.63 gallons
Therefore, you would need 11 full gallons of paint to put two coats on the entire surface of the tank.
A cylindrical tank has the dimensions shown. Use a formula to find the surface area of the tank. If one gallon of paint covers 140 ft squared, how many full gallons would you need to put two coats of paint on the entire surface of the tank? Use 3.14 for pi.
Radius = 5.5
Base = 16
Solve for ft.
1 answer