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The volume and curved surface area of the cylinder are 1650cm3 and 660cm2 respectively. Find the radius and height of the cylinder.

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5cm, 21cm

10cm, 2cm

1cm, 5cm

None of these

answer is D.

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Detailed Solution

Volume of cylinder = 1650cm2
πr2h = 1650

___(i)
Surface area of the cylinder = 2πrh
660 = 2πrh ___(ii)
Form eqn. (i) and eqn. (ii)

r = 5cm
Put in the equation. (2)
660 = 2π × 5 × h

h = 21cm

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