an equilateral triangle has a side length of 3 5/6,what is the perimeter of the triangle?

Question

what is the perimeter of the triangle of 3 5/6

Answer 1

P  = ?

a = 3 5/6 = 23/6

P = a + a + a = 3a

P =( 3*23)/6  = 23/2 =11 1/2

Answer 2

A triangle has a perimeter of 77 centimeters. Each of the two longer sides of the triangle is three times as long as the shortest side. Find the length of each side of the triangle.