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Option 2 : 2 only
Let the height and the radius of the cylinder be ‘h’ units and ‘r’ units respectively
Considering statement 1,
Volume of cylinder = 5π × (diameter)3
⇒ πr2h = 5π × (2r)3
⇒ πr2h = 5π × 8r3
⇒ h = 5 × 8r
⇒ h = 40r
Statement 1 is not correct
Considering statement 2,
Curved surface area of cylinder = 4π × (diameter)2
⇒ 2πrh = 4π × (2r)2
⇒ 2πrh = 4π × 4r2
⇒ h = 4 × 2r
⇒ h = 8r
Statement 2 is correct
∴ Only statement 2 is correct
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