Question 1179966
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Ellis is painting wooden fenceposts before putting them in his yard. They are each 5 feet tall and have 
a diameter of 1 foot. There are 10 fenceposts in all. How much paint will Ellis need to paint all the surfaces 
of the 10 fenceposts? Use 3.14 for π, and round your answer to the nearest hundredth.
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        Calculations in the post by @mananth are elementary incorrect.

        I came to bring a correct solution.



height of fence post 5 ft

diameter of fence post = 1 ft radius = 0.5 ft

Total surface of the fence post = {{{2*pi*r*(r+h)}}}

= 2* 3.14 * 0.5 * (5+0.5)

= 6.28 * 0.5 * 5.5

= 17.27 ft^2 / post

For 10 posts
172.7 ft^2


How much paint /ft^2


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Calculated correctly.