Question

The ratio between the curved surface area and the total surface area of a right circular cylinder
Find the ratio between the height and radius of the cylinder is 1:2
find the ratio between the height and radius of the cylinder
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Answer 1

Answer:

Curved surface area of cylinder =2πrh

Total surface area =2πrh+2πr

2

Given:

2πrh+2πr

2

2πrh

=

2

1

→

h+r

h

=

2

1

⇒2h=h+r

⇒h=r

r

h

=1

∴ required ratio h:r=1:1