Q. What is the total surface area (in sq cm) of a hollow cylinder open at both ends, if its length is 22 cm, external radius is 7 cm and thickness is 1 cm? (Take π = 22/7)
A) 3758.86
B) 1879.43
C) 2819.145
D) 939.715
✔ Correct Answer: 1879.43
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