Question

If the ratio of the volumes of two cubes is 1.8, then find the ratio of the total surface areas of the two cubes​

Answer 1

Answer:

Step-by-step explanation:

Correct option is

C

2:1

Let V  

1

​

 and V  

2

​

 be two volume of cubes.

l  

1

​

 and l  

2

​

 be edges of the two cubes.

We know that,

Volume of cube V=l  

3

 

So,

⇒    

V  

2

​

 

V  

1

​

 

​

=  

l  

2

3

​

 

l  

1

3

​

 

​

 

⇒    

1

8

​

=(  

l  

2

​

 

l  

1

​

 

​

)  

3

             [ Given ]

∴    

l  

2

​

 

l  

1

​

 

​

=  

1

2

​

 

∴  Ratio of their edges is 2:1.