Cholesterol is made mainly in the liver.

But it's also found in animal foods such as eggs, shellfish, meat and dairy products.

Fish are aquatic, craniate, gill-bearing animals that lack limbs with digits. Included in this definition are the living hagfish, lampreys, and cartilaginous and bony fish as well as various extinct related groups.

Radius = 5 meters 

Diameter =radius * 2

Diameter = 5*2 = 10 meters 

Diameter = 5 meters 

 Radius=diameter /2

 = 5/2 = 2.5 meters