# HELP RATIO OF TWO BALLS

#### Ana.stasia

##### New member
Basically I have a three sided prism, one ball inside it and one ball outside it.
I need to calculate the ratio of the surface of these two balls.
I did and I got 1:5, while the book says the answe is 4:1.
Where did I go wrong?

#### firemath

##### Full Member
Can you type the original problem? That would help immensely.

#### Ana.stasia

##### New member
Can you type the original problem? That would help immensely.
A regular three-sided prism is described around a ball, and a ball is described around it. Determine the ratio of the area of the balls.

#### Jomo

##### Elite Member
It is inscribed, not described.

#### Jomo

##### Elite Member
Can you type the original problem? That would help immensely.

#### Ana.stasia

##### New member
It is inscribed, not described.
I am trying to translate it into English as best as I can.

#### Jomo

##### Elite Member
I am trying to translate it into English as best as I can.
I understand. Just trying to be helpful.

#### Ana.stasia

##### New member
R
I understand. Just trying to be helpful.
Thank you. What about the problem though?