A water tank is in the shape of a right circular cylinder. The diameter is 8 feet, and the height is 21.5 feet. Find the surface area of the water tank. Use 3.14 for π .(1 point)
feet2
The surface area of a cylinder is given by the formula:
SA = 2πr^2 + 2πrh
First, we need to find the radius of the cylinder:
Radius = diameter / 2
Radius = 8 feet / 2
Radius = 4 feet
Now, we can calculate the surface area:
SA = 2(3.14)(4^2) + 2(3.14)(4)(21.5)
SA = 2(3.14)(16) + 2(3.14)(86)
SA = 2(50.24) + 2(270.04)
SA = 100.48 + 540.08
SA = 640.56
Therefore, the surface area of the water tank is 640.56 square feet.