Two cylinders of same base radius 5 cm and height 6 cm are placed one on the other. Find the curved surface area of the resulting cylinder.
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Step-by-step explanation:
The base radius would not change
but the height of the resulting cylinder would be 6+6=12cm
Therefore
Curved surface area of cylinder=2πrh
=2×22/7×5×12
=377.14cm^2
therefore the answer would be
None of these
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