What is the perimeter of the triangle ABC if AB = a cm BC = 6cm AC = 8cm. Find the value of the expression at a = 5.

Given: ABC – triangle;

AB = a cm, BC = 6 cm, AC = 8 cm;

Perimeter of a triangle (PABC) -? cm;

a = 5.

The perimeter of a triangle is the sum of the lengths of all its sides.

So PABC = AB + BC + AC = a + 6 + 8 = (a + 14) see.

The perimeter of a given triangle ABC at a = 5 is:

PABC = AB + BC + AC = a + 14 = 5 + 14 = 19 cm.

Answer: for a = 5, the perimeter of the ABC triangle is 19 cm.