Question

The ratio between the curved surface area
and the total surface area of a cylinder is
1:2. Find the ratio between the height and the
radius of the cylinder

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Answer 1

Answer:

Note: Curved surface area of cylinder =2πrh

Total surface area =2πrh+2πr^

Given: 2πrh\2πrh+2πr^ = 1\2

h\h+r = 1\2

⇒2h=h+r

⇒h=r

=> h\r = 1

∴ required ratio h:r=1:1