Question

A steel water tank is a cylinder with a diameter of 30 ft and a height of 18 ft. How many square feet of steel were needed to make the tank?

Please give me the steps to doing this problem!

Answer 1

check picture below

it was needed "S" ft²

Answer 2

You need to use the surface area formula, A= 2 π r h+ 2 π r^2

The radius is half the diameter of 30 feet. Plug in the values, and you should get 119.38, but I'm not 100% sure if it wants both sides, because that's what surface area is. If you only want the outside, half it, getting 59.69. hope it helps