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  1. A rectangular paper sheet of dimensions 22 cm × 12 cm is folded in the form of a cylinder along its length. What will be the volume of this cylinder ? (Take π = 22/7 )
    1. 460 cm³
    2. 462 cm³
    3. 624 cm³
    4. 400 cm³
Correct Option: B

2πr = 22

⇒2 ×
22
 × r = 22 ∴ r =
7
72

Volume of cylinder = πr²h
=
22
 ×
7
 ×
7
 × 12 = 462 cm³
722


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