Option b: 10 in, 18.5 in, 31.5 in.
Explanation:
The three sides of a triangle are  and
 and 
The perimeter of the triangle is  .
.
Since, Perimeter = all sides of the triangle 
Let us add all the three sides to determine the length of each side.

Substituting the value of Perimeter and simplifying, we get,

Substituting  in the three sides of the triangle
 in the three sides of the triangle  and
 and  , we get,
, we get,



Thus, the lengths of each side are 10 in, 18.5 in, 31.5 in.