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  1. The radius of base and curved surface area of a right cylinder is ‘r’ units and 4prh square units respectively. The height of the cylinder is :
    1. h/2 units
    2. h units
    3. 2h units
    4. 4h units
Correct Option: C

Curved surface area of cylinder = 2πRH
∴ According to the question, 2πrH = 4πrh
⇒ H = 2h units


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