What is the surface area of a cylindrical ring if its outside diameter is 16 mm and its inside diameter is 10 mm? Round your answer to the nearest whole number. A. 118mm2 B. 92mm2 C. 385mm2 D. 123mm2
Accepted Solution
A:
123 mm2 Given is diameter convert to radius Then it is simple Answer = pi (r1 square - r2 square)