Question

A local zoo is designing a new cylinder shaped water tank for their penguin habitat. The tank needs to have a radius of 4 feet and a height of 8 feet. How much surface area of special waterproof coating will they need to cover the entire outside of the tank, including the top and bottom?

Use 3.14 for π
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(2 points)
Responses

226.08 square feet
226.08 square feet

251.20 square feet
251.20 square feet

276.32 square feet
276.32 square feet

301.44 square feet

Answer 1

Total surface area = 2πr(r + h). With r = 4 ft and h = 8 ft:

Total = 2·3.14·4·(4 + 8) = 2·3.14·4·12 = 96·3.14 = 301.44 square feet.

Answer: 301.44 square feet.