A metallic solid cylinder having diameter 6 cm is melted and recasted in the form of a sphere of
the same radius. Find the total surface area of the cylinder.
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Answered by
16
Answer:
cylinder is converted into sphere means shape has changed, surface area is changed. the thing which remains the same it's volume.
comparing both volumes
cylinder volume = sphere volume
therefore, h = (4/3)r = (2/3)d
h = 4 cm
cylinder surface area
= 2πrh + πr^2 + πr^2
=24π + 9π + 9π
= 42π
Answered by
3
2 x 22/7 x 3 (4 + 3)
= 132 cm Sq.
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