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S.A.(Cyl) = 2pir*h This is for the circular (round) face.
Then add the area of the two circular ends
2A = 2pir^(2)
Hence for the whole cylinder including the circular ends.
S.A. = 2pirh + 2pir^(2)
Factor
S.A. = 2pir(h + r)
So you needs to know the radius(r) and cylinder(length)(h).
The units will be squared (units^(2)).
An example
R = 2 cm
h = 20 cm
Hence
SA = 23.142(2 + 20)
SA= 23.142(22)
SA = 3.14 (88)
SA = 276.32 cm^(2).
What else can I help you with?
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