Question

A right circular cylinder just encloses a sphere of radius. The ratio of
there surface area is?????​

Answer 1

(i) SA of sphere =4πr  

2

 

(ii) Height =r+r=2r

radius =r

⇒Curved Surface Area=2πrh=2πr(2r)=4πr  

2

 

(iii) Ratio =  

4πr  

2

 

4πr  

2

 

​  

=  

1

1

or 1:1