SOLUTION: What is the approximate total surface area of a cylinder with a diameter of 46 and height of 142

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Question 322356: What is the approximate total surface area of a cylinder with a diameter of 46 and height of 142
Answer by checkley77(12844) About Me  (Show Source):
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SA=2B+H*CIRCUMFERANCE.
SA=2(PI*R^2)+142(2PI*R)
SA=2(3.14*46/2)+142(2*3.14*46/2)
SA=2(3.14*23)+142(6.28*23)
SA=72.22+142*144.44
SA=72.22+20,510.48
SA=20,582.7 ANS.