The perimeter of a triangle is found by adding the lengths of all three sides together.
Perimeter = 11 in + 5 in + 12 in
Perimeter = 28 in
Therefore, the perimeter of the triangle with sides 11in, 5in, and 12in is 28 inches.
what is the perimeter of a triangle with sides 11in 5 in and 12in in length
1 answer