The radii of a sphere and a right circular cylinder are 3 cm each. If their volumes are equal, then curved surface area of the cylinder is _____ (in cm2)
Question
Geometry:
The radii of a sphere and a right circular cylinder are 3 cm each. If their volumes are equal, then curved surface area of the cylinder is _____ (in cm2)
As given,
4/3 πr3 = πr2h
=> 4/3 r = h
=> (4/3) x 3 = h => h = 4
Curved surface area of the cylinder = 2πrh
= 2 x 22/7 x 3 x 4
= 528/7 cm2
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Aptitude