Martin designed a bead that was a right cylinder with a cylindrical hole through the center of the bases. The outer cylinder had a radius of 1 centimeter, the inner cylinder had a radius of 0.5 centimeters, and the height of the bead was 1.5 centimeters. After creating the bead, he covered the entire bead with a protective coating. What was the approximate area of the bead that Martin covered? O 21.99 cm? 9.42 cm? O 18.85 cm2 O 4.71 cm?

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