Question

The radius of a cylindrical tank is doubled, while

the lateral surface area remains unchanged. The

height will be

a)Halved

b)Doubled

c) Tripled

d)Four times​

Answer 1

Answer:

Step-by-step explanation:Lateral surface area of a cylinder =2πrh.  

Let h  

1

​  

 and h  

2

​  

 be the heights.

Then 2×  

7

22

​  

×r×h  

1

​  

=2×  

7

22

​  

×2r×h  

2

​  

 

Clearly h  

2

​  

=  

2

h  

1

​  

 

​