AriellatheMermaid
AriellatheMermaid AriellatheMermaid
  • 21-09-2022
  • Mathematics
contestada

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

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

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jimthompson5910 jimthompson5910
  • 21-09-2022

Answer:  5181

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Work Shown:

[tex]SA = 2\pi r^2 + 2\pi r h\\\\SA \approx 2*3.14*15^2 + 2*3.14*15*40\\\\SA \approx 5181\\\\[/tex]

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.
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