The perimeter is the distance around triangle. So, the perimeter of the
\triangle is the sum of the lengths of all three sides.
\The perimeter P of a triangle is given by the formula, 

The perimeter P of a triangle is
\
(Substitute
)
(Convert mixed number to improper fraction)
(Add:
)
(Convert improper fraction to mixed number)
The perimeter of the triangle is
.