Adrian is painting the outside of a cylinder tire he plans to recycle as a planter. The tire has a radius of 4 feet and height of 3 feet. In order to understand how much paint is needed, Adrian wants to know the surface area of the outside of the tire. How many square feet is the outside of the tire? Use 3.14 for pi and round your answer to the nearest tenth.
The surface area of the outside of the tire can be calculated by finding the lateral surface area of the cylinder and then subtracting the area of the two circular bases.
The formula for the lateral surface area of a cylinder is L = 2 * pi * r * h, where r is the radius and h is the height.
L = 2 * 3.14 * 4 * 3
L = 75.36 square feet
The area of the circular bases can be calculated using the formula A = pi * r^2.
A = 3.14 * 4^2
A = 50.24 square feet
Therefore, the surface area of the outside of the tire is 75.36 - 50.24 = 25.12 square feet.