Solve.A countertop is comprised of a pressboard layer that is 8 centimeters thick and a formica layer that is 3 centimeters thick. A protective coating that is 1.68 millimeters thick is added to the top of the formica. How thick is the countertop?
A. 12.68 cm
B. 111.68 cm
C. 11.0168 cm
D. 11.168 cm
Answer: D
Mathematics
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A. 
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