Adrian is painting the outside of a cylinder that he plans to use as a coffee table. The cylinder has a radius of 4 feet and a height of 3 feet. Adrian wants to paint all around the outside of the cylinder, including the top and bottom faces. In order to understand how much paint is needed, he wants to know the surface are of the outside of the cylinder.
What is the surface area of the cylinder, measured in square feet? Use 3.14 for pi and round your answer to the nearest tenth. (1 point)
The formula for the surface area of a cylinder is 2πr(r+h), where r is the radius and h is the height.
Plugging in the given values, we have:
Surface area = 2π(4)(4+3)
Surface area = 2π(4)(7)
Surface area ≈ 2π(4)(7) (since 3.14 is approximately π)
Surface area ≈ 2(3.14)(4)(7)
Surface area ≈ 2(3.14)(28)
Surface area ≈ 2(87.92)
Surface area ≈ 175.84
The surface area of the outside of the cylinder is approximately 175.84 square feet.