SOLUTION: what is the radius of a closed cylinder with a height of 20cm and the surface area is1188

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Question 753160: what is the radius of a closed cylinder with a height of 20cm and the surface area is1188
Answer by dkppathak(439) About Me  (Show Source):
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surface area of cylinder =1188
2pie rh =1188
2rx20x22/7 =1188
r=1188x7/2x22x20
r=189/20
r=9.45 cm