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Ellis is painting wooden fenceposts before putting them in his yard

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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 TT, and round your answer to the nearest hundredth. Provide an explanation and proof for your answer to receive full credit.