Question

Find the surface area of water tower that is 40 feet tall and has a diameter of 30 feet. DO NOT ROUND YOUR ANSWER!

Answer 1

Explanation:

3768 feet. Is this right?

Answer 2

Answer: 5181

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Work Shown:

`SA = 2\pi r^2 + 2\pi r h\\\\SA \approx 2*3.14*15^2 + 2*3.14*15*40\\\\SA \approx 5181\\\\`

The cylinder has a surface area of about 5181 square feet.

Side notes:

• The diameter of d = 30 leads to a radius of r = d/2 = 30/2 = 15.
• The picture is misleading. The conical top is ignored and we only are finding the surface area of the cylinder.